venmic: init

pkgs/durdraw/default.nix

@@ -18,8 +18,8 @@ python3Packages.buildPythonApplication rec {
     hash = "sha256-a+4DGWBD5XLaNAfTN/fmI/gALe76SCoWrnjyglNhVPY=";
   };
 
-  build-system = with python3Packages; [
-    setuptools
+  build-system = [
+    python3Packages.setuptools
   ];
 
   dependencies = [];

pkgs/venmic/default.nix

@@ -0,0 +1,101 @@
+{ cmake
+, cacert
+, cpm-cmake
+, git
+, pkg-config
+, pulseaudio
+, pipewire
+, fetchFromGitHub
+, stdenv
+}:
+
+# See
+# https://github.com/NixOS/nixpkgs/blob/nixos-25.05/pkgs/development/compilers/codon/default.nix#L136
+# for an example of an CPM/CMake project built with Nix.
+
+let
+  version = "6.1.0";
+  depsDir = "deps";
+
+  src = fetchFromGitHub {
+    owner = "Vencord";
+    repo = "venmic";
+    rev = "v${version}";
+    hash = "sha256-0UP8a2bfhWGsB2Lg/GeIBu4zw1zHnXbitT8vU+DLeEY=";
+  };
+
+  venmic-deps = stdenv.mkDerivation {
+    name = "venmic-deps-${version}.tar.gz";
+
+    inherit src;
+
+    nativeBuildInputs = [
+      cmake
+      cacert
+      cpm-cmake
+      git
+      # Pkg-config is implicitly used by CMake and will fail to find libs
+      # without it.
+      pkg-config
+    ];
+
+    buildInputs = [
+      pulseaudio
+      pipewire
+    ];
+
+    dontBuild = true;
+
+    cmakeFlags = [
+      "-DCPM_DOWNLOAD_ALL=ON"
+      "-DCPM_SOURCE_CACHE=${depsDir}"
+    ];
+
+    installPhase = ''
+      # Build a reproducible tarball, per
+      # https://reproducible-builds.org/docs/archives.
+      tar --owner=0 --group=0 --numeric-owner --format=gnu \
+          --sort=name --mtime="@$SOURCE_DATE_EPOCH" \
+          -czf $out \
+          "${depsDir}"
+    '';
+
+    outputHashAlgo = "sha256";
+    outputHash = "sha256-KIkf3bg1+vbGaYo/QTtOF7bUQVZH8vrBPNejk3EbNuA=";
+  };
+
+  venmic = stdenv.mkDerivation {
+    pname = "venmic";
+    inherit version src;
+
+    postUnpack = ''
+      # Bring in the cached CPM deps.
+      mkdir -p $sourceRoot/build
+      tar xzf ${venmic-deps} -C $sourceRoot/build
+
+      # Bring in CPM itself — Venmic tries to download it itself.
+      rm $sourceRoot/cmake/cpm.cmake
+      ln -s ${cpm-cmake}/share/cpm/CPM.cmake $sourceRoot/cmake/cpm.cmake
+    '';
+
+    cmakeFlags = [
+      "-DCPM_SOURCE_CACHE=${depsDir}"
+      "-Dvenmic_prefer_remote=OFF"
+    ];
+
+    nativeBuildInputs = [
+      cmake
+      cpm-cmake
+      git
+      # Pkg-config is implicitly used by CMake and will fail to find libs
+      # without it.
+      pkg-config
+    ];
+
+    buildInputs = [
+      pulseaudio
+      pipewire
+    ];
+  };
+
+in venmic