feat: migrate from Cedar to SpiceDB authorization system

This is a major architectural change that replaces the Cedar policy-based
authorization system with SpiceDB's relation-based authorization.

Key changes:

- Migrate from Rust to Go implementation
- Replace Cedar policies with SpiceDB schema and relationships
- Switch from envoy `ext_authz` with Cedar to SpiceDB permission checks
- Update build system and dependencies for Go ecosystem
- Maintain Envoy integration for external authorization

This change enables more flexible permission modeling through SpiceDB's
Google Zanzibar inspired relation-based system, supporting complex
hierarchical permissions that were difficult to express in Cedar.

Breaking change: Existing Cedar policies and Rust-based configuration
will no longer work and need to be migrated to SpiceDB schema.

14 files changed, 0 insertions, 2163 deletions

diff --git a/vendor/pkg-config/.cargo-checksum.json b/vendor/pkg-config/.cargo-checksum.json
deleted file mode 100644
index 286e0c26..00000000
--- a/vendor/pkg-config/.cargo-checksum.json
+++ /dev/null
@@ -1 +0,0 @@
-{"files":{"CHANGELOG.md":"f613cde47a4a2b477e30660e80c0f91ddd99564ca60e7ccacc05db8e47558ac3","Cargo.lock":"7072b11a157cb5696facb19f0816eb5cfe00b804356da9dfb3eb1c297e31594b","Cargo.lock.msrv":"6401e6e4a20302502ab12eff9ac75c8aa66e96ed5ca32824d2a8d92d16f2e91b","Cargo.toml":"19b7808a36b6f42c812ba154cdd7b48347511158a7f69f52bcf2c4d073ee4a37","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"378f5840b258e2779c39418f3f2d7b2ba96f1c7917dd6be0713f88305dbda397","README.md":"184dd47cdbb3168bdddccaa594f1e56604cb07034b06c1129ac91d41800902da","src/lib.rs":"afee92eaacd83e2bb6426d45a83e01218b3493ccf0dc8b5403413e37ad86b3ee","tests/escape.pc":"00caa4136799dbe5bd504239ba90d1156c12def365c8d761da319fe8a83b398e","tests/foo.pc":"4a1c442c5d1c10761ea1644f8fd58f93cc5a706391bc67b04c243bbd35d70d79","tests/framework.pc":"304fdb6cea92973650e410ab1f70ce1ebeb7718af3f139e806efbf182acd565c","tests/rpath.pc":"424a844e844edfef02692492def9864833391f581338962946646989a69c1180","tests/test.rs":"aa60972a93f57fbc17620739996a94877de523a57e1de7541ee3541539ae2bb9"},"package":"7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"}
\ No newline at end of file
diff --git a/vendor/pkg-config/CHANGELOG.md b/vendor/pkg-config/CHANGELOG.md
deleted file mode 100644
index 3484738f..00000000
--- a/vendor/pkg-config/CHANGELOG.md
+++ /dev/null
@@ -1,218 +0,0 @@
-# Changelog
-
-All notable changes to this project will be documented in this file.
-
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
-
-## [0.3.32] - 2025-03-03
-
-### Fixed
-
-- Suggest installing pkgconf via homebrew on macOS instead of pkg-config (#173)
-
-- Quote failed pkg-config command correctly in error messages to allow for
-  directly copy&pasting it into a shell (#175)
-
-## [0.3.31] - 2024-09-23
-
-### Fixed
-
-- Remove double `cargo:` prefix from linker line (#168).
-
-## [0.3.30] - 2024-02-14
-
-### Changed
-
-- Update documentation for cross-compilation (#161).
-
-- Update GitHub Action CI (#160).
-
-## [0.3.29] - 2024-01-17
-
-### Fixed
-
-- Detection and usage of Windows static libraries (#154).
-
-- Passing `-Wl,-u` to the linker if specified in the pkg-config file (#154).
-
-## [0.3.28] - 2023-12-20
-
-### Fixed
-
-- Pass -l:libfoo.a to linker directly (#149).
-
-### Changed
-
-- Improve error message when library not found (#158).
-
-## [0.3.27] - 2023-05-03
-
-### Added
-
-- Support falling back to `pkgconf` if `pkg-config` is not available (#145).
-
-### Changed
-
-- Simplify running `pkg-config` (#144).
-
-- Document MSRV in `Cargo.toml` via `rust-version`.
-
-- Fix a couple of minor clippy warnings (#147).
-
-## [0.3.26] - 2022-10-26
-
-### Added
-
-- Support for handling full paths to libraries in addition to normal `-l`
-  linker flags (#134).
-
-## [0.3.25] - 2022-03-31
-
-### Added
-
-- Support for parsing `-Wl` linker arguments from the `Libs` lines and
-  passing them to the linker as well as making them available via
-  `Library::ld_args` (#131).
-
-### Changed
-
-- Use SPDX license format and remove obsolete badge info (#129).
-
-## [0.3.24] - 2021-12-11
-
-### Fixed
-
-- Re-add `target_supported()`, which was accidentally removed in 0.3.15 (#128).
-
-## [0.3.23] - 2021-12-06
-
-### Changed
-
-- Improve error messages when a `pkg-config` package can't be found (#127).
-
-## [0.3.22] - 2021-10-24
-
-### Fixed
-
-- `pkg-config` compiles again with Rust 1.30 or newer. 0.3.21 accidentally
-  made use of API only available since 1.40 (#124, #125).
-
-### Changed
-
-- Switched from Travis to GitHub Actions for the CI. Travis is dysfunctional
-  since quite some time (#126).
-
-## [0.3.21] - 2021-10-22
-
-### Fixed
-
-- Tests succeed again on macOS (#122).
-
-### Changed
-
-- Improve error message in case of missing pkg-config and provide instructions
-  how it can be installed (#121).
-
-## [0.3.20] - 2021-09-25
-
-### Fixed
-
-- Use target-specific pkg-config consistently everywhere (#121, #118).
-
-## [0.3.19] - 2020-10-13
-
-### Added
-
-- Add `README.md` to be displayed on crates.io (#111).
-
-- Support for `-isystem`, `-iquote` and `-idirafter` include flags (#115).
-
-### Changed
-
-- Improve documentation for cross-compilation (#113).
-
-- Allow overriding system root via the `PKG_CONFIG_SYSROOT_DIR` or `SYSROOT`
-  environment variable (#82).
-
-## [0.3.18] - 2020-07-11
-
-### Fixed
-
-- Use `env::var_os()` almost everywhere to handle non-UTF8 paths in
-  environment variables, and also improve error handling around environment
-  variable handling (#106).
-
-### Changed
-
-- Default the `env_metadata` build parameter to `true` instead of `false`.
-  Whenever a pkg-config related environment variable changes it would make
-  sense to rebuild crates that use pkg-config, or otherwise changes might not
-  be picked up. As such the previous default didn't make much sense (#105).
-
-## [0.3.17] - 2019-11-02
-
-### Fixed
-
-- Fix support for multiple version number constraints (#95)
-
-## [0.3.16] - 2019-09-09
-
-### Changed
-- Stop using deprecated functions and require Rust 1.30 (#84)
-
-### Fixed
-- Fix repository URL in README.md
-- Fix various clippy warnings
-
-### Added
-- Run `cargo fmt` as part of the CI (#89)
-- Derive `Clone` for `Library` and `Debug` for `Config (#91)
-- Add support for `PKG_CONFIG_ALLOW_SYSTEM_CFLAGS` and enable by default (#93)
-
-## [0.3.15] - 2019-07-25
-
-### Changed
-- Changes minimum documented rust version to 1.28 (#76)
-
-### Fixed
-- Fix Travis CI badge url (#78)
-- Fix project name in README.md (#81)
-
-### Added
-- Support specifying range of versions (#75)
-- Allow cross-compilation if pkg-config is customized (#44, #86)
-
-## [0.3.14] - 2018-08-28
-
-### Fixed
-- Don't append .lib suffix on MSVC builds (#72)
-
-## [0.3.13] - 2018-08-06
-
-### Fixed
-- Fix MSVC support to actually work and consider library paths too (#71)
-
-## [0.3.12] - 2018-06-18
-
-### Added
-- Support for MSVC (#70)
-- Document and test Rust 1.13 as minimally supported version (#66)
-
-## [0.3.11] - 2018-04-24
-
-### Fixed
-- Re-added AsciiExt import (#65)
-
-## [0.3.10] - 2018-04-23
-
-### Added
-- Allow static linking of /usr/ on macOS (#42)
-- Add support for parsing `-Wl,` style framework flags (#48)
-- Parse defines in `pkg-config` output (#49)
-- Rerun on `PKG_CONFIG_PATH` changes (#50)
-- Introduce target-scoped variables (#58)
-- Respect pkg-config escaping rules used with --cflags and --libs (#61)
-
-### Changed
-- Use `?` instead of `try!()` in the codebase (#63)
diff --git a/vendor/pkg-config/Cargo.lock b/vendor/pkg-config/Cargo.lock
deleted file mode 100644
index 5693cccf..00000000
--- a/vendor/pkg-config/Cargo.lock
+++ /dev/null
@@ -1,16 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "lazy_static"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "pkg-config"
-version = "0.3.32"
-dependencies = [
- "lazy_static 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[metadata]
-"checksum lazy_static 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
diff --git a/vendor/pkg-config/Cargo.lock.msrv b/vendor/pkg-config/Cargo.lock.msrv
deleted file mode 100644
index 6b5f4c2d..00000000
--- a/vendor/pkg-config/Cargo.lock.msrv
+++ /dev/null
@@ -1,14 +0,0 @@
-[[package]]
-name = "lazy_static"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "pkg-config"
-version = "0.3.32"
-dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[metadata]
-"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
diff --git a/vendor/pkg-config/Cargo.toml b/vendor/pkg-config/Cargo.toml
deleted file mode 100644
index 4429ce78..00000000
--- a/vendor/pkg-config/Cargo.toml
+++ /dev/null
@@ -1,43 +0,0 @@
-# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
-#
-# When uploading crates to the registry Cargo will automatically
-# "normalize" Cargo.toml files for maximal compatibility
-# with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies.
-#
-# If you are reading this file be aware that the original Cargo.toml
-# will likely look very different (and much more reasonable).
-# See Cargo.toml.orig for the original contents.
-
-[package]
-edition = "2018"
-rust-version = "1.31"
-name = "pkg-config"
-version = "0.3.32"
-authors = ["Alex Crichton <alex@alexcrichton.com>"]
-build = false
-autolib = false
-autobins = false
-autoexamples = false
-autotests = false
-autobenches = false
-description = """
-A library to run the pkg-config system tool at build time in order to be used in
-Cargo build scripts.
-"""
-documentation = "https://docs.rs/pkg-config"
-readme = "README.md"
-keywords = ["build-dependencies"]
-license = "MIT OR Apache-2.0"
-repository = "https://github.com/rust-lang/pkg-config-rs"
-
-[lib]
-name = "pkg_config"
-path = "src/lib.rs"
-
-[[test]]
-name = "test"
-path = "tests/test.rs"
-
-[dev-dependencies.lazy_static]
-version = "1"
diff --git a/vendor/pkg-config/LICENSE-APACHE b/vendor/pkg-config/LICENSE-APACHE
deleted file mode 100644
index 16fe87b0..00000000
--- a/vendor/pkg-config/LICENSE-APACHE
+++ /dev/null
@@ -1,201 +0,0 @@
-                              Apache License
-                        Version 2.0, January 2004
-                     http://www.apache.org/licenses/
-
-TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-1. Definitions.
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-   any Contribution intentionally submitted for inclusion in the Work
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-   the terms of any separate license agreement you may have executed
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-   boilerplate notice, with the fields enclosed by brackets "[]"
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-Copyright [yyyy] [name of copyright owner]
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-Unless required by applicable law or agreed to in writing, software
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diff --git a/vendor/pkg-config/LICENSE-MIT b/vendor/pkg-config/LICENSE-MIT
deleted file mode 100644
index 39e0ed66..00000000
--- a/vendor/pkg-config/LICENSE-MIT
+++ /dev/null
@@ -1,25 +0,0 @@
-Copyright (c) 2014 Alex Crichton
-
-Permission is hereby granted, free of charge, to any
-person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the
-Software without restriction, including without
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-the Software, and to permit persons to whom the Software
-is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions
-of the Software.
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-ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
-TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
-PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
-SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
-IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
diff --git a/vendor/pkg-config/README.md b/vendor/pkg-config/README.md
deleted file mode 100644
index fea82139..00000000
--- a/vendor/pkg-config/README.md
+++ /dev/null
@@ -1,79 +0,0 @@
-# pkg-config-rs
-
-[![Build Status](https://github.com/rust-lang/pkg-config-rs/actions/workflows/ci.yml/badge.svg)](https://github.com/rust-lang/pkg-config-rs/actions)
-[![Rust](https://img.shields.io/badge/rust-1.31%2B-blue.svg?maxAge=3600)](https://github.com/rust-lang/pkg-config-rs/)
-
-[Documentation](https://docs.rs/pkg-config)
-
-A simple library meant to be used as a build dependency with Cargo packages in
-order to use the system `pkg-config` tool (if available) to determine where a
-library is located.
-
-You can use this crate directly to probe for specific libraries, or use
-[system-deps](https://github.com/gdesmott/system-deps) to declare all your
-`pkg-config` dependencies in `Cargo.toml`.
-
-This library requires Rust 1.31+.
-
-# Example
-
-Find the system library named `foo`, with minimum version 1.2.3:
-
-```rust
-extern crate pkg_config;
-
-fn main() {
-    pkg_config::Config::new().atleast_version("1.2.3").probe("foo").unwrap();
-}
-```
-
-Find the system library named `foo`, with no version requirement (not
-recommended):
-
-```rust
-extern crate pkg_config;
-
-fn main() {
-    pkg_config::probe_library("foo").unwrap();
-}
-```
-
-# External configuration via target-scoped environment variables
-
-In cross-compilation context, it is useful to manage separately `PKG_CONFIG_PATH`
-and a few other variables for the `host` and the `target` platform.
-
-The supported variables are: `PKG_CONFIG_PATH`, `PKG_CONFIG_LIBDIR`, and
-`PKG_CONFIG_SYSROOT_DIR`.
-
-Each of these variables can also be supplied with certain prefixes and suffixes, in the following prioritized order:
-
-1. `<var>_<target>` - for example, `PKG_CONFIG_PATH_x86_64-unknown-linux-gnu`
-2. `<var>_<target_with_underscores>` - for example, `PKG_CONFIG_PATH_x86_64_unknown_linux_gnu`
-3. `<build-kind>_<var>` - for example, `HOST_PKG_CONFIG_PATH` or `TARGET_PKG_CONFIG_PATH`
-4. `<var>` - a plain `PKG_CONFIG_PATH`
-
-This crate will allow `pkg-config` to be used in cross-compilation
-if `PKG_CONFIG_SYSROOT_DIR` or `PKG_CONFIG` is set. You can set `PKG_CONFIG_ALLOW_CROSS=1`
-to bypass the compatibility check, but please note that enabling use of `pkg-config` in
-cross-compilation without appropriate sysroot and search paths set is likely to break builds.
-
-Some Rust sys crates support building vendored libraries from source, which may be a work
-around for lack of cross-compilation support in `pkg-config`.
-
-# License
-
-This project is licensed under either of
-
- * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
-   https://www.apache.org/licenses/LICENSE-2.0)
- * MIT license ([LICENSE-MIT](LICENSE-MIT) or
-   https://opensource.org/licenses/MIT)
-
-at your option.
-
-### Contribution
-
-Unless you explicitly state otherwise, any contribution intentionally submitted
-for inclusion in pkg-config-rs by you, as defined in the Apache-2.0 license, shall be
-dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/pkg-config/src/lib.rs b/vendor/pkg-config/src/lib.rs
deleted file mode 100644
index 93e34c6d..00000000
--- a/vendor/pkg-config/src/lib.rs
+++ /dev/null
@@ -1,1205 +0,0 @@
-//! A build dependency for Cargo libraries to find system artifacts through the
-//! `pkg-config` utility.
-//!
-//! This library will shell out to `pkg-config` as part of build scripts and
-//! probe the system to determine how to link to a specified library. The
-//! `Config` structure serves as a method of configuring how `pkg-config` is
-//! invoked in a builder style.
-//!
-//! After running `pkg-config` all appropriate Cargo metadata will be printed on
-//! stdout if the search was successful.
-//!
-//! # Environment variables
-//!
-//! A number of environment variables are available to globally configure how
-//! this crate will invoke `pkg-config`:
-//!
-//! * `FOO_NO_PKG_CONFIG` - if set, this will disable running `pkg-config` when
-//!   probing for the library named `foo`.
-//!
-//! ### Linking
-//!
-//! There are also a number of environment variables which can configure how a
-//! library is linked to (dynamically vs statically). These variables control
-//! whether the `--static` flag is passed. Note that this behavior can be
-//! overridden by configuring explicitly on `Config`. The variables are checked
-//! in the following order:
-//!
-//! * `FOO_STATIC` - pass `--static` for the library `foo`
-//! * `FOO_DYNAMIC` - do not pass `--static` for the library `foo`
-//! * `PKG_CONFIG_ALL_STATIC` - pass `--static` for all libraries
-//! * `PKG_CONFIG_ALL_DYNAMIC` - do not pass `--static` for all libraries
-//!
-//! ### Cross-compilation
-//!
-//! In cross-compilation context, it is useful to manage separately
-//! `PKG_CONFIG_PATH` and a few other variables for the `host` and the `target`
-//! platform.
-//!
-//! The supported variables are: `PKG_CONFIG_PATH`, `PKG_CONFIG_LIBDIR`, and
-//! `PKG_CONFIG_SYSROOT_DIR`.
-//!
-//! Each of these variables can also be supplied with certain prefixes and
-//! suffixes, in the following prioritized order:
-//!
-//! 1. `<var>_<target>` - for example, `PKG_CONFIG_PATH_x86_64-unknown-linux-gnu`
-//! 2. `<var>_<target_with_underscores>` - for example,
-//!    `PKG_CONFIG_PATH_x86_64_unknown_linux_gnu`
-//! 3. `<build-kind>_<var>` - for example, `HOST_PKG_CONFIG_PATH` or
-//!    `TARGET_PKG_CONFIG_PATH`
-//! 4. `<var>` - a plain `PKG_CONFIG_PATH`
-//!
-//! This crate will allow `pkg-config` to be used in cross-compilation
-//! if `PKG_CONFIG_SYSROOT_DIR` or `PKG_CONFIG` is set. You can set
-//! `PKG_CONFIG_ALLOW_CROSS=1` to bypass the compatibility check, but please
-//! note that enabling use of `pkg-config` in cross-compilation without
-//! appropriate sysroot and search paths set is likely to break builds.
-//!
-//! # Example
-//!
-//! Find the system library named `foo`, with minimum version 1.2.3:
-//!
-//! ```no_run
-//! fn main() {
-//!     pkg_config::Config::new().atleast_version("1.2.3").probe("foo").unwrap();
-//! }
-//! ```
-//!
-//! Find the system library named `foo`, with no version requirement (not
-//! recommended):
-//!
-//! ```no_run
-//! fn main() {
-//!     pkg_config::probe_library("foo").unwrap();
-//! }
-//! ```
-//!
-//! Configure how library `foo` is linked to.
-//!
-//! ```no_run
-//! fn main() {
-//!     pkg_config::Config::new().atleast_version("1.2.3").statik(true).probe("foo").unwrap();
-//! }
-//! ```
-
-#![doc(html_root_url = "https://docs.rs/pkg-config/0.3")]
-
-use std::collections::HashMap;
-use std::env;
-use std::error;
-use std::ffi::{OsStr, OsString};
-use std::fmt;
-use std::fmt::Display;
-use std::io;
-use std::ops::{Bound, RangeBounds};
-use std::path::PathBuf;
-use std::process::{Command, Output};
-use std::str;
-
-/// Wrapper struct to polyfill methods introduced in 1.57 (`get_envs`, `get_args` etc).
-/// This is needed to reconstruct the pkg-config command for output in a copy-
-/// paste friendly format via `Display`.
-struct WrappedCommand {
-    inner: Command,
-    program: OsString,
-    env_vars: Vec<(OsString, OsString)>,
-    args: Vec<OsString>,
-}
-
-#[derive(Clone, Debug)]
-pub struct Config {
-    statik: Option<bool>,
-    min_version: Bound<String>,
-    max_version: Bound<String>,
-    extra_args: Vec<OsString>,
-    cargo_metadata: bool,
-    env_metadata: bool,
-    print_system_libs: bool,
-    print_system_cflags: bool,
-}
-
-#[derive(Clone, Debug)]
-pub struct Library {
-    /// Libraries specified by -l
-    pub libs: Vec<String>,
-    /// Library search paths specified by -L
-    pub link_paths: Vec<PathBuf>,
-    /// Library file paths specified without -l
-    pub link_files: Vec<PathBuf>,
-    /// Darwin frameworks specified by -framework
-    pub frameworks: Vec<String>,
-    /// Darwin framework search paths specified by -F
-    pub framework_paths: Vec<PathBuf>,
-    /// C/C++ header include paths specified by -I
-    pub include_paths: Vec<PathBuf>,
-    /// Linker options specified by -Wl
-    pub ld_args: Vec<Vec<String>>,
-    /// C/C++ definitions specified by -D
-    pub defines: HashMap<String, Option<String>>,
-    /// Version specified by .pc file's Version field
-    pub version: String,
-    /// Ensure that this struct can only be created via its private `[Library::new]` constructor.
-    /// Users of this crate can only access the struct via `[Config::probe]`.
-    _priv: (),
-}
-
-/// Represents all reasons `pkg-config` might not succeed or be run at all.
-pub enum Error {
-    /// Aborted because of `*_NO_PKG_CONFIG` environment variable.
-    ///
-    /// Contains the name of the responsible environment variable.
-    EnvNoPkgConfig(String),
-
-    /// Detected cross compilation without a custom sysroot.
-    ///
-    /// Ignore the error with `PKG_CONFIG_ALLOW_CROSS=1`,
-    /// which may let `pkg-config` select libraries
-    /// for the host's architecture instead of the target's.
-    CrossCompilation,
-
-    /// Failed to run `pkg-config`.
-    ///
-    /// Contains the command and the cause.
-    Command { command: String, cause: io::Error },
-
-    /// `pkg-config` did not exit successfully after probing a library.
-    ///
-    /// Contains the command and output.
-    Failure { command: String, output: Output },
-
-    /// `pkg-config` did not exit successfully on the first attempt to probe a library.
-    ///
-    /// Contains the command and output.
-    ProbeFailure {
-        name: String,
-        command: String,
-        output: Output,
-    },
-
-    #[doc(hidden)]
-    // please don't match on this, we're likely to add more variants over time
-    __Nonexhaustive,
-}
-
-impl WrappedCommand {
-    fn new<S: AsRef<OsStr>>(program: S) -> Self {
-        Self {
-            inner: Command::new(program.as_ref()),
-            program: program.as_ref().to_os_string(),
-            env_vars: Vec::new(),
-            args: Vec::new(),
-        }
-    }
-
-    fn args<I, S>(&mut self, args: I) -> &mut Self
-    where
-        I: IntoIterator<Item = S> + Clone,
-        S: AsRef<OsStr>,
-    {
-        self.inner.args(args.clone());
-        self.args
-            .extend(args.into_iter().map(|arg| arg.as_ref().to_os_string()));
-
-        self
-    }
-
-    fn arg<S: AsRef<OsStr>>(&mut self, arg: S) -> &mut Self {
-        self.inner.arg(arg.as_ref());
-        self.args.push(arg.as_ref().to_os_string());
-
-        self
-    }
-
-    fn env<K, V>(&mut self, key: K, value: V) -> &mut Self
-    where
-        K: AsRef<OsStr>,
-        V: AsRef<OsStr>,
-    {
-        self.inner.env(key.as_ref(), value.as_ref());
-        self.env_vars
-            .push((key.as_ref().to_os_string(), value.as_ref().to_os_string()));
-
-        self
-    }
-
-    fn output(&mut self) -> io::Result<Output> {
-        self.inner.output()
-    }
-}
-
-/// Quote an argument that has spaces in it.
-/// When our `WrappedCommand` is printed to the terminal, arguments that contain spaces needed to be quoted.
-/// Otherwise, we will have output such as:
-/// `pkg-config --libs --cflags foo foo < 3.11`
-/// which cannot be used in a terminal - it will attempt to read a file named 3.11 and provide it as stdin for pkg-config.
-/// Using this function, we instead get the correct output:
-/// `pkg-config --libs --cflags foo 'foo < 3.11'`
-fn quote_if_needed(arg: String) -> String {
-    if arg.contains(' ') {
-        format!("'{}'", arg)
-    } else {
-        arg
-    }
-}
-
-/// Output a command invocation that can be copy-pasted into the terminal.
-/// `Command`'s existing debug implementation is not used for that reason,
-/// as it can sometimes lead to output such as:
-/// `PKG_CONFIG_ALLOW_SYSTEM_CFLAGS="1" PKG_CONFIG_ALLOW_SYSTEM_LIBS="1" "pkg-config" "--libs" "--cflags" "mylibrary"`
-/// Which cannot be copy-pasted into terminals such as nushell, and is a bit noisy.
-/// This will look something like:
-/// `PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 pkg-config --libs --cflags mylibrary`
-impl Display for WrappedCommand {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        // Format all explicitly defined environment variables
-        let envs = self
-            .env_vars
-            .iter()
-            .map(|(env, arg)| format!("{}={}", env.to_string_lossy(), arg.to_string_lossy()))
-            .collect::<Vec<String>>()
-            .join(" ");
-
-        // Format all pkg-config arguments
-        let args = self
-            .args
-            .iter()
-            .map(|arg| quote_if_needed(arg.to_string_lossy().to_string()))
-            .collect::<Vec<String>>()
-            .join(" ");
-
-        write!(f, "{} {} {}", envs, self.program.to_string_lossy(), args)
-    }
-}
-
-impl error::Error for Error {}
-
-impl fmt::Debug for Error {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
-        // Failed `unwrap()` prints Debug representation, but the default debug format lacks helpful instructions for the end users
-        <Error as fmt::Display>::fmt(self, f)
-    }
-}
-
-impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
-        match *self {
-            Error::EnvNoPkgConfig(ref name) => write!(f, "Aborted because {} is set", name),
-            Error::CrossCompilation => f.write_str(
-                "pkg-config has not been configured to support cross-compilation.\n\
-                \n\
-                Install a sysroot for the target platform and configure it via\n\
-                PKG_CONFIG_SYSROOT_DIR and PKG_CONFIG_PATH, or install a\n\
-                cross-compiling wrapper for pkg-config and set it via\n\
-                PKG_CONFIG environment variable.",
-            ),
-            Error::Command {
-                ref command,
-                ref cause,
-            } => {
-                match cause.kind() {
-                    io::ErrorKind::NotFound => {
-                        let crate_name =
-                            std::env::var("CARGO_PKG_NAME").unwrap_or_else(|_| "sys".to_owned());
-                        let instructions = if cfg!(target_os = "macos") {
-                            "Try `brew install pkgconf` if you have Homebrew.\n"
-                        } else if cfg!(target_os = "ios") {
-                            "" // iOS cross-compilation requires a custom setup, no easy fix
-                        } else if cfg!(unix) {
-                            "Try `apt install pkg-config`, or `yum install pkg-config`, or `brew install pkgconf`\n\
-                            or `pkg install pkg-config`, or `apk add pkgconfig` \
-                            depending on your distribution.\n"
-                        } else {
-                            "" // There's no easy fix for Windows users
-                        };
-                        write!(f, "Could not run `{command}`\n\
-                        The pkg-config command could not be found.\n\
-                        \n\
-                        Most likely, you need to install a pkg-config package for your OS.\n\
-                        {instructions}\
-                        \n\
-                        If you've already installed it, ensure the pkg-config command is one of the\n\
-                        directories in the PATH environment variable.\n\
-                        \n\
-                        If you did not expect this build to link to a pre-installed system library,\n\
-                        then check documentation of the {crate_name} crate for an option to\n\
-                        build the library from source, or disable features or dependencies\n\
-                        that require pkg-config.", command = command, instructions = instructions, crate_name = crate_name)
-                    }
-                    _ => write!(f, "Failed to run command `{}`, because: {}", command, cause),
-                }
-            }
-            Error::ProbeFailure {
-                ref name,
-                ref command,
-                ref output,
-            } => {
-                let crate_name =
-                    env::var("CARGO_PKG_NAME").unwrap_or(String::from("<NO CRATE NAME>"));
-
-                writeln!(f, "")?;
-
-                // Give a short explanation of what the error is
-                writeln!(
-                    f,
-                    "pkg-config {}",
-                    match output.status.code() {
-                        Some(code) => format!("exited with status code {}", code),
-                        None => "was terminated by signal".to_string(),
-                    }
-                )?;
-
-                // Give the command run so users can reproduce the error
-                writeln!(f, "> {}\n", command)?;
-
-                // Explain how it was caused
-                writeln!(
-                    f,
-                    "The system library `{}` required by crate `{}` was not found.",
-                    name, crate_name
-                )?;
-                writeln!(
-                    f,
-                    "The file `{}.pc` needs to be installed and the PKG_CONFIG_PATH environment variable must contain its parent directory.",
-                    name
-                )?;
-
-                // There will be no status code if terminated by signal
-                if let Some(_code) = output.status.code() {
-                    // Nix uses a wrapper script for pkg-config that sets the custom
-                    // environment variable PKG_CONFIG_PATH_FOR_TARGET
-                    let search_locations = ["PKG_CONFIG_PATH_FOR_TARGET", "PKG_CONFIG_PATH"];
-
-                    // Find a search path to use
-                    let mut search_data = None;
-                    for location in search_locations.iter() {
-                        if let Ok(search_path) = env::var(location) {
-                            search_data = Some((location, search_path));
-                            break;
-                        }
-                    }
-
-                    // Guess the most reasonable course of action
-                    let hint = if let Some((search_location, search_path)) = search_data {
-                        writeln!(
-                            f,
-                            "{} contains the following:\n{}",
-                            search_location,
-                            search_path
-                                .split(':')
-                                .map(|path| format!("    - {}", path))
-                                .collect::<Vec<String>>()
-                                .join("\n"),
-                        )?;
-
-                        format!("you may need to install a package such as {name}, {name}-dev or {name}-devel.", name=name)
-                    } else {
-                        // Even on Nix, setting PKG_CONFIG_PATH seems to be a viable option
-                        writeln!(f, "The PKG_CONFIG_PATH environment variable is not set.")?;
-
-                        format!(
-                            "if you have installed the library, try setting PKG_CONFIG_PATH to the directory containing `{}.pc`.",
-                            name
-                        )
-                    };
-
-                    // Try and nudge the user in the right direction so they don't get stuck
-                    writeln!(f, "\nHINT: {}", hint)?;
-                }
-
-                Ok(())
-            }
-            Error::Failure {
-                ref command,
-                ref output,
-            } => {
-                write!(
-                    f,
-                    "`{}` did not exit successfully: {}",
-                    command, output.status
-                )?;
-                format_output(output, f)
-            }
-            Error::__Nonexhaustive => panic!(),
-        }
-    }
-}
-
-fn format_output(output: &Output, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-    let stdout = String::from_utf8_lossy(&output.stdout);
-    if !stdout.is_empty() {
-        write!(f, "\n--- stdout\n{}", stdout)?;
-    }
-    let stderr = String::from_utf8_lossy(&output.stderr);
-    if !stderr.is_empty() {
-        write!(f, "\n--- stderr\n{}", stderr)?;
-    }
-    Ok(())
-}
-
-/// Deprecated in favor of the probe_library function
-#[doc(hidden)]
-pub fn find_library(name: &str) -> Result<Library, String> {
-    probe_library(name).map_err(|e| e.to_string())
-}
-
-/// Simple shortcut for using all default options for finding a library.
-pub fn probe_library(name: &str) -> Result<Library, Error> {
-    Config::new().probe(name)
-}
-
-#[doc(hidden)]
-#[deprecated(note = "use config.target_supported() instance method instead")]
-pub fn target_supported() -> bool {
-    Config::new().target_supported()
-}
-
-/// Run `pkg-config` to get the value of a variable from a package using
-/// `--variable`.
-///
-/// The content of `PKG_CONFIG_SYSROOT_DIR` is not injected in paths that are
-/// returned by `pkg-config --variable`, which makes them unsuitable to use
-/// during cross-compilation unless specifically designed to be used
-/// at that time.
-pub fn get_variable(package: &str, variable: &str) -> Result<String, Error> {
-    let arg = format!("--variable={}", variable);
-    let cfg = Config::new();
-    let out = cfg.run(package, &[&arg])?;
-    Ok(str::from_utf8(&out).unwrap().trim_end().to_owned())
-}
-
-impl Config {
-    /// Creates a new set of configuration options which are all initially set
-    /// to "blank".
-    pub fn new() -> Config {
-        Config {
-            statik: None,
-            min_version: Bound::Unbounded,
-            max_version: Bound::Unbounded,
-            extra_args: vec![],
-            print_system_cflags: true,
-            print_system_libs: true,
-            cargo_metadata: true,
-            env_metadata: true,
-        }
-    }
-
-    /// Indicate whether the `--static` flag should be passed.
-    ///
-    /// This will override the inference from environment variables described in
-    /// the crate documentation.
-    pub fn statik(&mut self, statik: bool) -> &mut Config {
-        self.statik = Some(statik);
-        self
-    }
-
-    /// Indicate that the library must be at least version `vers`.
-    pub fn atleast_version(&mut self, vers: &str) -> &mut Config {
-        self.min_version = Bound::Included(vers.to_string());
-        self.max_version = Bound::Unbounded;
-        self
-    }
-
-    /// Indicate that the library must be equal to version `vers`.
-    pub fn exactly_version(&mut self, vers: &str) -> &mut Config {
-        self.min_version = Bound::Included(vers.to_string());
-        self.max_version = Bound::Included(vers.to_string());
-        self
-    }
-
-    /// Indicate that the library's version must be in `range`.
-    pub fn range_version<'a, R>(&mut self, range: R) -> &mut Config
-    where
-        R: RangeBounds<&'a str>,
-    {
-        self.min_version = match range.start_bound() {
-            Bound::Included(vers) => Bound::Included(vers.to_string()),
-            Bound::Excluded(vers) => Bound::Excluded(vers.to_string()),
-            Bound::Unbounded => Bound::Unbounded,
-        };
-        self.max_version = match range.end_bound() {
-            Bound::Included(vers) => Bound::Included(vers.to_string()),
-            Bound::Excluded(vers) => Bound::Excluded(vers.to_string()),
-            Bound::Unbounded => Bound::Unbounded,
-        };
-        self
-    }
-
-    /// Add an argument to pass to pkg-config.
-    ///
-    /// It's placed after all of the arguments generated by this library.
-    pub fn arg<S: AsRef<OsStr>>(&mut self, arg: S) -> &mut Config {
-        self.extra_args.push(arg.as_ref().to_os_string());
-        self
-    }
-
-    /// Define whether metadata should be emitted for cargo allowing it to
-    /// automatically link the binary. Defaults to `true`.
-    pub fn cargo_metadata(&mut self, cargo_metadata: bool) -> &mut Config {
-        self.cargo_metadata = cargo_metadata;
-        self
-    }
-
-    /// Define whether metadata should be emitted for cargo allowing to
-    /// automatically rebuild when environment variables change. Defaults to
-    /// `true`.
-    pub fn env_metadata(&mut self, env_metadata: bool) -> &mut Config {
-        self.env_metadata = env_metadata;
-        self
-    }
-
-    /// Enable or disable the `PKG_CONFIG_ALLOW_SYSTEM_LIBS` environment
-    /// variable.
-    ///
-    /// This env var is enabled by default.
-    pub fn print_system_libs(&mut self, print: bool) -> &mut Config {
-        self.print_system_libs = print;
-        self
-    }
-
-    /// Enable or disable the `PKG_CONFIG_ALLOW_SYSTEM_CFLAGS` environment
-    /// variable.
-    ///
-    /// This env var is enabled by default.
-    pub fn print_system_cflags(&mut self, print: bool) -> &mut Config {
-        self.print_system_cflags = print;
-        self
-    }
-
-    /// Deprecated in favor fo the `probe` function
-    #[doc(hidden)]
-    pub fn find(&self, name: &str) -> Result<Library, String> {
-        self.probe(name).map_err(|e| e.to_string())
-    }
-
-    /// Run `pkg-config` to find the library `name`.
-    ///
-    /// This will use all configuration previously set to specify how
-    /// `pkg-config` is run.
-    pub fn probe(&self, name: &str) -> Result<Library, Error> {
-        let abort_var_name = format!("{}_NO_PKG_CONFIG", envify(name));
-        if self.env_var_os(&abort_var_name).is_some() {
-            return Err(Error::EnvNoPkgConfig(abort_var_name));
-        } else if !self.target_supported() {
-            return Err(Error::CrossCompilation);
-        }
-
-        let mut library = Library::new();
-
-        let output = self
-            .run(name, &["--libs", "--cflags"])
-            .map_err(|e| match e {
-                Error::Failure { command, output } => Error::ProbeFailure {
-                    name: name.to_owned(),
-                    command,
-                    output,
-                },
-                other => other,
-            })?;
-        library.parse_libs_cflags(name, &output, self);
-
-        let output = self.run(name, &["--modversion"])?;
-        library.parse_modversion(str::from_utf8(&output).unwrap());
-
-        Ok(library)
-    }
-
-    /// True if pkg-config is used for the host system, or configured for cross-compilation
-    pub fn target_supported(&self) -> bool {
-        let target = env::var_os("TARGET").unwrap_or_default();
-        let host = env::var_os("HOST").unwrap_or_default();
-
-        // Only use pkg-config in host == target situations by default (allowing an
-        // override).
-        if host == target {
-            return true;
-        }
-
-        // pkg-config may not be aware of cross-compilation, and require
-        // a wrapper script that sets up platform-specific prefixes.
-        match self.targeted_env_var("PKG_CONFIG_ALLOW_CROSS") {
-            // don't use pkg-config if explicitly disabled
-            Some(ref val) if val == "0" => false,
-            Some(_) => true,
-            None => {
-                // if not disabled, and pkg-config is customized,
-                // then assume it's prepared for cross-compilation
-                self.targeted_env_var("PKG_CONFIG").is_some()
-                    || self.targeted_env_var("PKG_CONFIG_SYSROOT_DIR").is_some()
-            }
-        }
-    }
-
-    /// Deprecated in favor of the top level `get_variable` function
-    #[doc(hidden)]
-    pub fn get_variable(package: &str, variable: &str) -> Result<String, String> {
-        get_variable(package, variable).map_err(|e| e.to_string())
-    }
-
-    fn targeted_env_var(&self, var_base: &str) -> Option<OsString> {
-        match (env::var("TARGET"), env::var("HOST")) {
-            (Ok(target), Ok(host)) => {
-                let kind = if host == target { "HOST" } else { "TARGET" };
-                let target_u = target.replace('-', "_");
-
-                self.env_var_os(&format!("{}_{}", var_base, target))
-                    .or_else(|| self.env_var_os(&format!("{}_{}", var_base, target_u)))
-                    .or_else(|| self.env_var_os(&format!("{}_{}", kind, var_base)))
-                    .or_else(|| self.env_var_os(var_base))
-            }
-            (Err(env::VarError::NotPresent), _) | (_, Err(env::VarError::NotPresent)) => {
-                self.env_var_os(var_base)
-            }
-            (Err(env::VarError::NotUnicode(s)), _) | (_, Err(env::VarError::NotUnicode(s))) => {
-                panic!(
-                    "HOST or TARGET environment variable is not valid unicode: {:?}",
-                    s
-                )
-            }
-        }
-    }
-
-    fn env_var_os(&self, name: &str) -> Option<OsString> {
-        if self.env_metadata {
-            println!("cargo:rerun-if-env-changed={}", name);
-        }
-        env::var_os(name)
-    }
-
-    fn is_static(&self, name: &str) -> bool {
-        self.statik.unwrap_or_else(|| self.infer_static(name))
-    }
-
-    fn run(&self, name: &str, args: &[&str]) -> Result<Vec<u8>, Error> {
-        let pkg_config_exe = self.targeted_env_var("PKG_CONFIG");
-        let fallback_exe = if pkg_config_exe.is_none() {
-            Some(OsString::from("pkgconf"))
-        } else {
-            None
-        };
-        let exe = pkg_config_exe.unwrap_or_else(|| OsString::from("pkg-config"));
-
-        let mut cmd = self.command(exe, name, args);
-
-        match cmd.output().or_else(|e| {
-            if let Some(exe) = fallback_exe {
-                self.command(exe, name, args).output()
-            } else {
-                Err(e)
-            }
-        }) {
-            Ok(output) => {
-                if output.status.success() {
-                    Ok(output.stdout)
-                } else {
-                    Err(Error::Failure {
-                        command: format!("{}", cmd),
-                        output,
-                    })
-                }
-            }
-            Err(cause) => Err(Error::Command {
-                command: format!("{}", cmd),
-                cause,
-            }),
-        }
-    }
-
-    fn command(&self, exe: OsString, name: &str, args: &[&str]) -> WrappedCommand {
-        let mut cmd = WrappedCommand::new(exe);
-        if self.is_static(name) {
-            cmd.arg("--static");
-        }
-        cmd.args(args).args(&self.extra_args);
-
-        if let Some(value) = self.targeted_env_var("PKG_CONFIG_PATH") {
-            cmd.env("PKG_CONFIG_PATH", value);
-        }
-        if let Some(value) = self.targeted_env_var("PKG_CONFIG_LIBDIR") {
-            cmd.env("PKG_CONFIG_LIBDIR", value);
-        }
-        if let Some(value) = self.targeted_env_var("PKG_CONFIG_SYSROOT_DIR") {
-            cmd.env("PKG_CONFIG_SYSROOT_DIR", value);
-        }
-        if self.print_system_libs {
-            cmd.env("PKG_CONFIG_ALLOW_SYSTEM_LIBS", "1");
-        }
-        if self.print_system_cflags {
-            cmd.env("PKG_CONFIG_ALLOW_SYSTEM_CFLAGS", "1");
-        }
-        cmd.arg(name);
-        match self.min_version {
-            Bound::Included(ref version) => {
-                cmd.arg(&format!("{} >= {}", name, version));
-            }
-            Bound::Excluded(ref version) => {
-                cmd.arg(&format!("{} > {}", name, version));
-            }
-            _ => (),
-        }
-        match self.max_version {
-            Bound::Included(ref version) => {
-                cmd.arg(&format!("{} <= {}", name, version));
-            }
-            Bound::Excluded(ref version) => {
-                cmd.arg(&format!("{} < {}", name, version));
-            }
-            _ => (),
-        }
-        cmd
-    }
-
-    fn print_metadata(&self, s: &str) {
-        if self.cargo_metadata {
-            println!("cargo:{}", s);
-        }
-    }
-
-    fn infer_static(&self, name: &str) -> bool {
-        let name = envify(name);
-        if self.env_var_os(&format!("{}_STATIC", name)).is_some() {
-            true
-        } else if self.env_var_os(&format!("{}_DYNAMIC", name)).is_some() {
-            false
-        } else if self.env_var_os("PKG_CONFIG_ALL_STATIC").is_some() {
-            true
-        } else if self.env_var_os("PKG_CONFIG_ALL_DYNAMIC").is_some() {
-            false
-        } else {
-            false
-        }
-    }
-}
-
-// Implement Default manually since Bound does not implement Default.
-impl Default for Config {
-    fn default() -> Config {
-        Config {
-            statik: None,
-            min_version: Bound::Unbounded,
-            max_version: Bound::Unbounded,
-            extra_args: vec![],
-            print_system_cflags: false,
-            print_system_libs: false,
-            cargo_metadata: false,
-            env_metadata: false,
-        }
-    }
-}
-
-impl Library {
-    fn new() -> Library {
-        Library {
-            libs: Vec::new(),
-            link_paths: Vec::new(),
-            link_files: Vec::new(),
-            include_paths: Vec::new(),
-            ld_args: Vec::new(),
-            frameworks: Vec::new(),
-            framework_paths: Vec::new(),
-            defines: HashMap::new(),
-            version: String::new(),
-            _priv: (),
-        }
-    }
-
-    /// Extract the &str to pass to cargo:rustc-link-lib from a filename (just the file name, not including directories)
-    /// using target-specific logic.
-    fn extract_lib_from_filename<'a>(target: &str, filename: &'a str) -> Option<&'a str> {
-        fn test_suffixes<'b>(filename: &'b str, suffixes: &[&str]) -> Option<&'b str> {
-            for suffix in suffixes {
-                if filename.ends_with(suffix) {
-                    return Some(&filename[..filename.len() - suffix.len()]);
-                }
-            }
-            None
-        }
-
-        let prefix = "lib";
-        if target.contains("windows") {
-            if target.contains("gnu") && filename.starts_with(prefix) {
-                // GNU targets for Windows, including gnullvm, use `LinkerFlavor::Gcc` internally in rustc,
-                // which tells rustc to use the GNU linker. rustc does not prepend/append to the string it
-                // receives via the -l command line argument before passing it to the linker:
-                // https://github.com/rust-lang/rust/blob/657f246812ab2684e3c3954b1c77f98fd59e0b21/compiler/rustc_codegen_ssa/src/back/linker.rs#L446
-                // https://github.com/rust-lang/rust/blob/657f246812ab2684e3c3954b1c77f98fd59e0b21/compiler/rustc_codegen_ssa/src/back/linker.rs#L457
-                // GNU ld can work with more types of files than just the .lib files that MSVC's link.exe needs.
-                // GNU ld will prepend the `lib` prefix to the filename if necessary, so it is okay to remove
-                // the `lib` prefix from the filename. The `.a` suffix *requires* the `lib` prefix.
-                // https://sourceware.org/binutils/docs-2.39/ld.html#index-direct-linking-to-a-dll
-                let filename = &filename[prefix.len()..];
-                return test_suffixes(filename, &[".dll.a", ".dll", ".lib", ".a"]);
-            } else {
-                // According to link.exe documentation:
-                // https://learn.microsoft.com/en-us/cpp/build/reference/link-input-files?view=msvc-170
-                //
-                //   LINK doesn't use file extensions to make assumptions about the contents of a file.
-                //   Instead, LINK examines each input file to determine what kind of file it is.
-                //
-                // However, rustc appends `.lib` to the string it receives from the -l command line argument,
-                // which it receives from Cargo via cargo:rustc-link-lib:
-                // https://github.com/rust-lang/rust/blob/657f246812ab2684e3c3954b1c77f98fd59e0b21/compiler/rustc_codegen_ssa/src/back/linker.rs#L828
-                // https://github.com/rust-lang/rust/blob/657f246812ab2684e3c3954b1c77f98fd59e0b21/compiler/rustc_codegen_ssa/src/back/linker.rs#L843
-                // So the only file extension that works for MSVC targets is `.lib`
-                // However, for externally created libraries, there's no
-                // guarantee that the extension is ".lib" so we need to
-                // consider all options.
-                // See:
-                // https://github.com/mesonbuild/meson/issues/8153
-                // https://github.com/rust-lang/rust/issues/114013
-                return test_suffixes(filename, &[".dll.a", ".dll", ".lib", ".a"]);
-            }
-        } else if target.contains("apple") {
-            if filename.starts_with(prefix) {
-                let filename = &filename[prefix.len()..];
-                return test_suffixes(filename, &[".a", ".so", ".dylib"]);
-            }
-            return None;
-        } else {
-            if filename.starts_with(prefix) {
-                let filename = &filename[prefix.len()..];
-                return test_suffixes(filename, &[".a", ".so"]);
-            }
-            return None;
-        }
-    }
-
-    fn parse_libs_cflags(&mut self, name: &str, output: &[u8], config: &Config) {
-        let target = env::var("TARGET");
-        let is_msvc = target
-            .as_ref()
-            .map(|target| target.contains("msvc"))
-            .unwrap_or(false);
-
-        let system_roots = if cfg!(target_os = "macos") {
-            vec![PathBuf::from("/Library"), PathBuf::from("/System")]
-        } else {
-            let sysroot = config
-                .env_var_os("PKG_CONFIG_SYSROOT_DIR")
-                .or_else(|| config.env_var_os("SYSROOT"))
-                .map(PathBuf::from);
-
-            if cfg!(target_os = "windows") {
-                if let Some(sysroot) = sysroot {
-                    vec![sysroot]
-                } else {
-                    vec![]
-                }
-            } else {
-                vec![sysroot.unwrap_or_else(|| PathBuf::from("/usr"))]
-            }
-        };
-
-        let mut dirs = Vec::new();
-        let statik = config.is_static(name);
-
-        let words = split_flags(output);
-
-        // Handle single-character arguments like `-I/usr/include`
-        let parts = words
-            .iter()
-            .filter(|l| l.len() > 2)
-            .map(|arg| (&arg[0..2], &arg[2..]));
-        for (flag, val) in parts {
-            match flag {
-                "-L" => {
-                    let meta = format!("rustc-link-search=native={}", val);
-                    config.print_metadata(&meta);
-                    dirs.push(PathBuf::from(val));
-                    self.link_paths.push(PathBuf::from(val));
-                }
-                "-F" => {
-                    let meta = format!("rustc-link-search=framework={}", val);
-                    config.print_metadata(&meta);
-                    self.framework_paths.push(PathBuf::from(val));
-                }
-                "-I" => {
-                    self.include_paths.push(PathBuf::from(val));
-                }
-                "-l" => {
-                    // These are provided by the CRT with MSVC
-                    if is_msvc && ["m", "c", "pthread"].contains(&val) {
-                        continue;
-                    }
-
-                    if val.starts_with(':') {
-                        // Pass this flag to linker directly.
-                        let meta = format!("rustc-link-arg={}{}", flag, val);
-                        config.print_metadata(&meta);
-                    } else if statik && is_static_available(val, &system_roots, &dirs) {
-                        let meta = format!("rustc-link-lib=static={}", val);
-                        config.print_metadata(&meta);
-                    } else {
-                        let meta = format!("rustc-link-lib={}", val);
-                        config.print_metadata(&meta);
-                    }
-
-                    self.libs.push(val.to_string());
-                }
-                "-D" => {
-                    let mut iter = val.split('=');
-                    self.defines.insert(
-                        iter.next().unwrap().to_owned(),
-                        iter.next().map(|s| s.to_owned()),
-                    );
-                }
-                "-u" => {
-                    let meta = format!("rustc-link-arg=-Wl,-u,{}", val);
-                    config.print_metadata(&meta);
-                }
-                _ => {}
-            }
-        }
-
-        // Handle multi-character arguments with space-separated value like `-framework foo`
-        let mut iter = words.iter().flat_map(|arg| {
-            if arg.starts_with("-Wl,") {
-                arg[4..].split(',').collect()
-            } else {
-                vec![arg.as_ref()]
-            }
-        });
-        while let Some(part) = iter.next() {
-            match part {
-                "-framework" => {
-                    if let Some(lib) = iter.next() {
-                        let meta = format!("rustc-link-lib=framework={}", lib);
-                        config.print_metadata(&meta);
-                        self.frameworks.push(lib.to_string());
-                    }
-                }
-                "-isystem" | "-iquote" | "-idirafter" => {
-                    if let Some(inc) = iter.next() {
-                        self.include_paths.push(PathBuf::from(inc));
-                    }
-                }
-                "-undefined" | "--undefined" => {
-                    if let Some(symbol) = iter.next() {
-                        let meta = format!("rustc-link-arg=-Wl,{},{}", part, symbol);
-                        config.print_metadata(&meta);
-                    }
-                }
-                _ => {
-                    let path = std::path::Path::new(part);
-                    if path.is_file() {
-                        // Cargo doesn't have a means to directly specify a file path to link,
-                        // so split up the path into the parent directory and library name.
-                        // TODO: pass file path directly when link-arg library type is stabilized
-                        // https://github.com/rust-lang/rust/issues/99427
-                        if let (Some(dir), Some(file_name), Ok(target)) =
-                            (path.parent(), path.file_name(), &target)
-                        {
-                            match Self::extract_lib_from_filename(
-                                target,
-                                &file_name.to_string_lossy(),
-                            ) {
-                                Some(lib_basename) => {
-                                    let link_search =
-                                        format!("rustc-link-search={}", dir.display());
-                                    config.print_metadata(&link_search);
-
-                                    let link_lib = format!("rustc-link-lib={}", lib_basename);
-                                    config.print_metadata(&link_lib);
-                                    self.link_files.push(PathBuf::from(path));
-                                }
-                                None => {
-                                    println!("cargo:warning=File path {} found in pkg-config file for {}, but could not extract library base name to pass to linker command line", path.display(), name);
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
-
-        let linker_options = words.iter().filter(|arg| arg.starts_with("-Wl,"));
-        for option in linker_options {
-            let mut pop = false;
-            let mut ld_option = vec![];
-            for subopt in option[4..].split(',') {
-                if pop {
-                    pop = false;
-                    continue;
-                }
-
-                if subopt == "-framework" {
-                    pop = true;
-                    continue;
-                }
-
-                ld_option.push(subopt);
-            }
-
-            let meta = format!("rustc-link-arg=-Wl,{}", ld_option.join(","));
-            config.print_metadata(&meta);
-
-            self.ld_args
-                .push(ld_option.into_iter().map(String::from).collect());
-        }
-    }
-
-    fn parse_modversion(&mut self, output: &str) {
-        self.version.push_str(output.lines().next().unwrap().trim());
-    }
-}
-
-fn envify(name: &str) -> String {
-    name.chars()
-        .map(|c| c.to_ascii_uppercase())
-        .map(|c| if c == '-' { '_' } else { c })
-        .collect()
-}
-
-/// System libraries should only be linked dynamically
-fn is_static_available(name: &str, system_roots: &[PathBuf], dirs: &[PathBuf]) -> bool {
-    let libnames = {
-        let mut names = vec![format!("lib{}.a", name)];
-
-        if cfg!(target_os = "windows") {
-            names.push(format!("{}.lib", name));
-        }
-
-        names
-    };
-
-    dirs.iter().any(|dir| {
-        let library_exists = libnames.iter().any(|libname| dir.join(&libname).exists());
-        library_exists && !system_roots.iter().any(|sys| dir.starts_with(sys))
-    })
-}
-
-/// Split output produced by pkg-config --cflags and / or --libs into separate flags.
-///
-/// Backslash in output is used to preserve literal meaning of following byte.  Different words are
-/// separated by unescaped space. Other whitespace characters generally should not occur unescaped
-/// at all, apart from the newline at the end of output. For compatibility with what others
-/// consumers of pkg-config output would do in this scenario, they are used here for splitting as
-/// well.
-fn split_flags(output: &[u8]) -> Vec<String> {
-    let mut word = Vec::new();
-    let mut words = Vec::new();
-    let mut escaped = false;
-
-    for &b in output {
-        match b {
-            _ if escaped => {
-                escaped = false;
-                word.push(b);
-            }
-            b'\\' => escaped = true,
-            b'\t' | b'\n' | b'\r' | b' ' => {
-                if !word.is_empty() {
-                    words.push(String::from_utf8(word).unwrap());
-                    word = Vec::new();
-                }
-            }
-            _ => word.push(b),
-        }
-    }
-
-    if !word.is_empty() {
-        words.push(String::from_utf8(word).unwrap());
-    }
-
-    words
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    #[cfg(target_os = "macos")]
-    fn system_library_mac_test() {
-        use std::path::Path;
-
-        let system_roots = vec![PathBuf::from("/Library"), PathBuf::from("/System")];
-
-        assert!(!is_static_available(
-            "PluginManager",
-            &system_roots,
-            &[PathBuf::from("/Library/Frameworks")]
-        ));
-        assert!(!is_static_available(
-            "python2.7",
-            &system_roots,
-            &[PathBuf::from(
-                "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config"
-            )]
-        ));
-        assert!(!is_static_available(
-            "ffi_convenience",
-            &system_roots,
-            &[PathBuf::from(
-                "/Library/Ruby/Gems/2.0.0/gems/ffi-1.9.10/ext/ffi_c/libffi-x86_64/.libs"
-            )]
-        ));
-
-        // Homebrew is in /usr/local, and it's not a part of the OS
-        if Path::new("/usr/local/lib/libpng16.a").exists() {
-            assert!(is_static_available(
-                "png16",
-                &system_roots,
-                &[PathBuf::from("/usr/local/lib")]
-            ));
-
-            let libpng = Config::new()
-                .range_version("1".."99")
-                .probe("libpng16")
-                .unwrap();
-            assert!(libpng.version.find('\n').is_none());
-        }
-    }
-
-    #[test]
-    #[cfg(target_os = "linux")]
-    fn system_library_linux_test() {
-        assert!(!is_static_available(
-            "util",
-            &[PathBuf::from("/usr")],
-            &[PathBuf::from("/usr/lib/x86_64-linux-gnu")]
-        ));
-        assert!(!is_static_available(
-            "dialog",
-            &[PathBuf::from("/usr")],
-            &[PathBuf::from("/usr/lib")]
-        ));
-    }
-
-    fn test_library_filename(target: &str, filename: &str) {
-        assert_eq!(
-            Library::extract_lib_from_filename(target, filename),
-            Some("foo")
-        );
-    }
-
-    #[test]
-    fn link_filename_linux() {
-        let target = "x86_64-unknown-linux-gnu";
-        test_library_filename(target, "libfoo.a");
-        test_library_filename(target, "libfoo.so");
-    }
-
-    #[test]
-    fn link_filename_apple() {
-        let target = "x86_64-apple-darwin";
-        test_library_filename(target, "libfoo.a");
-        test_library_filename(target, "libfoo.so");
-        test_library_filename(target, "libfoo.dylib");
-    }
-
-    #[test]
-    fn link_filename_msvc() {
-        let target = "x86_64-pc-windows-msvc";
-        // static and dynamic libraries have the same .lib suffix
-        test_library_filename(target, "foo.lib");
-    }
-
-    #[test]
-    fn link_filename_mingw() {
-        let target = "x86_64-pc-windows-gnu";
-        test_library_filename(target, "foo.lib");
-        test_library_filename(target, "libfoo.a");
-        test_library_filename(target, "foo.dll");
-        test_library_filename(target, "foo.dll.a");
-    }
-}
diff --git a/vendor/pkg-config/tests/escape.pc b/vendor/pkg-config/tests/escape.pc
deleted file mode 100644
index 701c4bf7..00000000
--- a/vendor/pkg-config/tests/escape.pc
+++ /dev/null
@@ -1,5 +0,0 @@
-Name: Escape
-Version: 4.2.0
-Description: Escape utility library
-Libs: -Llink\ path\ with\ spaces
-Cflags: -Iinclude\ path\ with\ spaces -DA=\"escaped\ string\'\ literal\" -DB=ESCAPED\ IDENTIFIER -DFOX=🦊
diff --git a/vendor/pkg-config/tests/foo.pc b/vendor/pkg-config/tests/foo.pc
deleted file mode 100644
index ce63ceb5..00000000
--- a/vendor/pkg-config/tests/foo.pc
+++ /dev/null
@@ -1,16 +0,0 @@
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include/valgrind
-arch=amd64
-os=linux
-platform=amd64-linux
-valt_load_address=0x38000000
-
-Name: Valgrind
-Description: A dynamic binary instrumentation framework
-Version: 3.10.0.SVN
-Requires:
-Libs: -L${libdir}/valgrind -lcoregrind-amd64-linux -lvex-amd64-linux -lgcc
-Cflags: -I${includedir} -isystem /usr/foo
-
diff --git a/vendor/pkg-config/tests/framework.pc b/vendor/pkg-config/tests/framework.pc
deleted file mode 100644
index fec17f47..00000000
--- a/vendor/pkg-config/tests/framework.pc
+++ /dev/null
@@ -1,16 +0,0 @@
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include/valgrind
-arch=amd64
-os=linux
-platform=amd64-linux
-valt_load_address=0x38000000
-
-Name: Valgrind
-Description: A dynamic binary instrumentation framework
-Version: 3.10.0.SVN
-Requires:
-Libs: -F${libdir} -framework foo -Wl,-framework,bar -Wl,-framework -Wl,baz -Wl,-framework,foobar,-framework,foobaz
-Cflags: -I${includedir}
-
diff --git a/vendor/pkg-config/tests/rpath.pc b/vendor/pkg-config/tests/rpath.pc
deleted file mode 100644
index 7c36c5cb..00000000
--- a/vendor/pkg-config/tests/rpath.pc
+++ /dev/null
@@ -1,7 +0,0 @@
-prefix=/usr/local
-
-Name: rpath
-Version: 4.2.0
-Description: RPath example library
-Libs: -L${prefix}/lib -Wl,-rpath,${prefix}/lib -lrpath
-Cflags: -I${prefix}/include
diff --git a/vendor/pkg-config/tests/test.rs b/vendor/pkg-config/tests/test.rs
deleted file mode 100644
index ef80fc71..00000000
--- a/vendor/pkg-config/tests/test.rs
+++ /dev/null
@@ -1,317 +0,0 @@
-use lazy_static::lazy_static;
-use pkg_config::Error;
-use std::env;
-use std::path::PathBuf;
-use std::sync::Mutex;
-
-lazy_static! {
-    static ref LOCK: Mutex<()> = Mutex::new(());
-}
-
-fn reset() {
-    for (k, _) in env::vars() {
-        if k.contains("DYNAMIC")
-            || k.contains("STATIC")
-            || k.contains("PKG_CONFIG_ALLOW_CROSS")
-            || k.contains("PKG_CONFIG_SYSROOT_DIR")
-            || k.contains("FOO_NO_PKG_CONFIG")
-        {
-            env::remove_var(&k);
-        }
-    }
-    env::remove_var("TARGET");
-    env::remove_var("HOST");
-    env::set_var("PKG_CONFIG_PATH", env::current_dir().unwrap().join("tests"));
-}
-
-fn find(name: &str) -> Result<pkg_config::Library, Error> {
-    pkg_config::probe_library(name)
-}
-
-#[test]
-fn cross_disabled() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("TARGET", "foo");
-    env::set_var("HOST", "bar");
-    match find("foo") {
-        Err(Error::CrossCompilation) => {}
-        x => panic!("Error::CrossCompilation expected, found `{:?}`", x),
-    }
-}
-
-#[test]
-fn cross_enabled() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("TARGET", "foo");
-    env::set_var("HOST", "bar");
-    env::set_var("PKG_CONFIG_ALLOW_CROSS", "1");
-    find("foo").unwrap();
-}
-
-#[test]
-fn cross_enabled_if_customized() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("TARGET", "foo");
-    env::set_var("HOST", "bar");
-    env::set_var("PKG_CONFIG_SYSROOT_DIR", "/tmp/cross-test");
-    find("foo").unwrap();
-}
-
-#[test]
-fn cross_disabled_if_customized() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("TARGET", "foo");
-    env::set_var("HOST", "bar");
-    env::set_var("PKG_CONFIG_ALLOW_CROSS", "0");
-    env::set_var("PKG_CONFIG_SYSROOT_DIR", "/tmp/cross-test");
-    match find("foo") {
-        Err(Error::CrossCompilation) => {}
-        _ => panic!("expected CrossCompilation failure"),
-    }
-}
-
-#[test]
-fn package_disabled() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("FOO_NO_PKG_CONFIG", "1");
-    match find("foo") {
-        Err(Error::EnvNoPkgConfig(name)) => assert_eq!(name, "FOO_NO_PKG_CONFIG"),
-        x => panic!("Error::EnvNoPkgConfig expected, found `{:?}`", x),
-    }
-}
-
-#[test]
-fn output_ok() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("foo").unwrap();
-    assert!(lib.libs.contains(&"gcc".to_string()));
-    assert!(lib.libs.contains(&"coregrind-amd64-linux".to_string()));
-    assert!(lib.link_paths.contains(&PathBuf::from("/usr/lib/valgrind")));
-    assert!(lib
-        .include_paths
-        .contains(&PathBuf::from("/usr/include/valgrind")));
-    assert!(lib.include_paths.contains(&PathBuf::from("/usr/foo")));
-}
-
-#[test]
-fn escapes() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("escape").unwrap();
-    assert!(lib
-        .include_paths
-        .contains(&PathBuf::from("include path with spaces")));
-    assert!(lib
-        .link_paths
-        .contains(&PathBuf::from("link path with spaces")));
-    assert_eq!(
-        lib.defines.get("A"),
-        Some(&Some("\"escaped string' literal\"".to_owned()))
-    );
-    assert_eq!(
-        lib.defines.get("B"),
-        Some(&Some("ESCAPED IDENTIFIER".to_owned()))
-    );
-    assert_eq!(lib.defines.get("FOX"), Some(&Some("🦊".to_owned())));
-}
-
-#[test]
-fn framework() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("framework").unwrap();
-    assert!(lib.frameworks.contains(&"foo".to_string()));
-    assert!(lib.frameworks.contains(&"bar".to_string()));
-    assert!(lib.frameworks.contains(&"baz".to_string()));
-    assert!(lib.frameworks.contains(&"foobar".to_string()));
-    assert!(lib.frameworks.contains(&"foobaz".to_string()));
-    assert!(lib.framework_paths.contains(&PathBuf::from("/usr/lib")));
-}
-
-#[test]
-fn get_variable() {
-    let _g = LOCK.lock();
-    reset();
-    let prefix = pkg_config::get_variable("foo", "prefix").unwrap();
-    assert_eq!(prefix, "/usr");
-}
-
-#[test]
-fn version() {
-    let _g = LOCK.lock();
-    reset();
-    assert_eq!(&find("foo").unwrap().version[..], "3.10.0.SVN");
-}
-
-#[test]
-fn atleast_version_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .atleast_version("3.10")
-        .probe("foo")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn atleast_version_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .atleast_version("3.11")
-        .probe("foo")
-        .unwrap();
-}
-
-#[test]
-fn exactly_version_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .exactly_version("3.10.0.SVN")
-        .probe("foo")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn exactly_version_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .exactly_version("3.10.0")
-        .probe("foo")
-        .unwrap();
-}
-
-#[test]
-fn range_version_range_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version("4.2.0".."4.4.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn range_version_range_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version("4.0.0".."4.2.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-fn range_version_range_inclusive_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version("4.0.0"..="4.2.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn range_version_range_inclusive_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version("3.8.0"..="4.0.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-fn range_version_range_from_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version("4.0.0"..)
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn range_version_range_from_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version("4.4.0"..)
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-fn range_version_range_to_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version(.."4.4.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn range_version_range_to_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version(.."4.2.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-fn range_version_range_to_inclusive_ok() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version(..="4.2.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-#[should_panic]
-fn range_version_range_to_inclusive_ng() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version(..="4.0.0")
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-fn range_version_full() {
-    let _g = LOCK.lock();
-    reset();
-    pkg_config::Config::new()
-        .range_version(..)
-        .probe("escape")
-        .unwrap();
-}
-
-#[test]
-fn rpath() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("rpath").unwrap();
-    assert!(lib
-        .ld_args
-        .contains(&vec!["-rpath".to_string(), "/usr/local/lib".to_string(),]));
-}