chore(deps): Bump vendor/bdwgc from 327ef1f to fc2990b (#559)

Bumps [vendor/bdwgc](https://github.com/bdwgc/bdwgc) from `327ef1f` to
`fc2990b`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="fc2990b5ec"><code>fc2990b</code></a>
Fix assertion violation in GC_push_all_stacks if DARWIN_PARSE_STACK</li>
<li><a
href="93526f8729"><code>93526f8</code></a>
GH Actions: Test DARWIN_PARSE_STACK with disabled
thread-local-alloc</li>
<li><a
href="0e9cffee3d"><code>0e9cffe</code></a>
Update AUTHORS file (add Tanish Saxena)</li>
<li><a
href="b6ae38c840"><code>b6ae38c</code></a>
Fix defensive bounds checking bypass in GC_proc_read_dirty</li>
<li><a
href="16ed906df7"><code>16ed906</code></a>
Fix GC_NO_THREADS_DISCOVERY W/A definition on Darwin</li>
<li><a
href="c0bdcf35fc"><code>c0bdcf3</code></a>
Enable thread-local allocation for DllMain-based thread
registration</li>
<li>See full diff in <a
href="327ef1f8c8...fc2990b5ec">compare
view</a></li>
</ul>
</details>
<br />


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.envrc

@@ -1 +0,0 @@
-use flake

.gitignore

@@ -1,3 +1,2 @@
 .cargo_cache
 target
-.direnv

build.rs

@@ -17,7 +17,7 @@ fn main() {
 
     println!(
         "cargo:rustc-link-search=native={}",
-        dst.join("lib64").display()
+        dst.join("lib").display()
     );
     println!("cargo:rustc-link-lib=static=atomic_ops");
 
@@ -31,7 +31,7 @@ fn main() {
 
     println!(
         "cargo:rustc-link-search=native={}",
-        dst.join("lib64").display()
+        dst.join("lib").display()
     );
     println!("cargo:rustc-link-lib=static=gc");
 
@@ -65,7 +65,7 @@ fn main() {
 
     println!(
         "cargo:rustc-link-search=native={}",
-        dst.join("lib64").display()
+        dst.join("lib").display()
     );
     println!("cargo:rustc-link-lib=static=gc");
 }

flake.lock

@@ -1,66 +0,0 @@
-{
-  "nodes": {
-    "fenix": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ],
-        "rust-analyzer-src": "rust-analyzer-src"
-      },
-      "locked": {
-        "lastModified": 1779185128,
-        "narHash": "sha256-Kl2bkmwZJD3n2KWDxuIlturZ7emqRK+anpD1LmDwpmY=",
-        "owner": "nix-community",
-        "repo": "fenix",
-        "rev": "b7bd9323fe26a3b4f4bddbb2c2a1dacabced2f88",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "fenix",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1778869304,
-        "narHash": "sha256-30sZNZoA1cqF5JNO9fVX+wgiQYjB7HJqqJ4ztCDeBZE=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "d233902339c02a9c334e7e593de68855ad26c4cb",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "fenix": "fenix",
-        "nixpkgs": "nixpkgs"
-      }
-    },
-    "rust-analyzer-src": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1779074864,
-        "narHash": "sha256-0M3WqsWmtXmv9Ev/vnFfCHosWvISDwiuuhQ104UO3CI=",
-        "owner": "rust-lang",
-        "repo": "rust-analyzer",
-        "rev": "cdfe408d4b436e806ff525cb3e67588a6a009ed1",
-        "type": "github"
-      },
-      "original": {
-        "owner": "rust-lang",
-        "ref": "nightly",
-        "repo": "rust-analyzer",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

flake.nix

@@ -1,54 +0,0 @@
-{
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    fenix = {
-      url = "github:nix-community/fenix";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-  };
-
-  outputs = { self, nixpkgs, fenix, ... }:
-  let
-    supportedSystems = [
-      "aarch64-darwin" "aarch64-linux"
-      "x86_64-darwin" "x86_64-linux"
-    ];
-
-    each-system = f: nixpkgs.lib.genAttrs supportedSystems (system: f rec {
-      pkgs = import nixpkgs {
-        inherit system overlays;
-      };
-      inherit (pkgs) lib;
-      inherit system;
-    });
-
-    overlays = [
-      fenix.overlays.default
-    ];
-
-  in {
-    _pkgs = each-system ({ pkgs, ... }: pkgs);
-
-    devShells = each-system ({ pkgs, lib, ... }: {
-      default = pkgs.mkShell {
-        packages = [
-          pkgs.pkg-config
-          (pkgs.fenix.complete.withComponents [
-            "cargo" "clippy" "rust-src" "rustc" "rustfmt"
-          ])
-          pkgs.rust-analyzer-nightly
-          pkgs.cmake
-        ];
-      };
-    });
-  };
-
-  nixConfig = {
-    extra-substituters = [
-      "https://fenix.cachix.org"
-    ];
-    extra-trusted-public-keys = [
-      "fenix.cachix.org-1:ecJhr+RdYEdcVgUkjruiYhjbBloIEGov7bos90cZi0Q="
-    ];
-  };
-}