refactor(nix/darwin): Include modified brew-nix overlay

This one should work on nix v2.18.x since v2.19.x is reported to have regressions
2024-11-02 12:11:48 +07:00 · 2024-11-02 12:11:48 +07:00 · 60964a91e2
commit 60964a91e2
parent 96590a271e
5 changed files with 128 additions and 49 deletions
--- a/.config/nix/overlays/darwin/brew.nix
+++ b/.config/nix/overlays/darwin/brew.nix
@ -0,0 +1,103 @@
+# Modified version of brew-nix/casks.nix
+#
+# REF: https://github.com/BatteredBunny/brew-nix/blob/9dfab294afea5029922bbc59a10ae487c7318d59/casks.nix
+{ system, nixpkgs, brew-api, ... }:
+let
+  pkgs = import nixpkgs {
+    inherit system;
+  };
+
+  hasBinary = cask: pkgs.lib.hasAttr "binary" (getArtifacts cask);
+  hasApp = cask: pkgs.lib.hasAttr "app" (getArtifacts cask);
+  hasPkg = cask: pkgs.lib.hasAttr "pkg" (getArtifacts cask);
+
+  getName = cask: builtins.elemAt cask.name 0;
+
+  getBinary = cask: builtins.elemAt (getArtifacts cask).binary 0;
+  getApp = cask: builtins.elemAt (getArtifacts cask).app 0;
+  getArtifacts = cask: pkgs.lib.mergeAttrsList cask.artifacts;
+
+  caskToDerivation = cask: pkgs.stdenv.mkDerivation rec {
+    pname = cask.token;
+    version = cask.version;
+
+    # FIXME: support variants
+    src = pkgs.fetchurl {
+      url = cask.url;
+      sha256 = pkgs.lib.optionalString (cask.sha256 != "no_check") cask.sha256;
+    };
+
+    nativeBuildInputs = with pkgs; [
+      undmg
+      unzip
+      gzip
+      _7zz
+      makeWrapper
+    ] ++ pkgs.lib.optional (hasPkg cask) (with pkgs; [
+      xar
+      cpio
+    ]);
+
+    unpackPhase =
+      if (hasPkg cask) then ''
+        xar -xf $src
+        for pkg in $(cat Distribution | grep -oE "#.+\.pkg" | sed -e "s/^#//" -e "s/$/\/Payload/"); do
+          zcat $pkg | cpio -i
+        done
+      '' else if (hasApp cask) then ''
+        undmg $src || 7zz x -snld $src
+      '' else if (hasBinary cask) then ''
+        if [ "$(file --mime-type -b "$src")" == "application/gzip" ]; then
+          gunzip $src -c > ${getBinary cask}
+        elif [ "$(file --mime-type -b "$src")" == "application/x-mach-binary" ]; then
+          cp $src ${getBinary cask}
+        fi
+      '' else "";
+
+    sourceRoot = pkgs.lib.optionalString (hasApp cask) (getApp cask);
+
+    installPhase =
+      if (hasPkg cask) then ''
+        mkdir -p $out/Applications
+        cp -R Applications/* $out/Applications/
+
+        if [ -d "Resources" ]; then
+          mkdir -p $out/Resources
+          cp -R Resources/* $out/Resources/
+        fi
+
+        if [ -d "Library" ]; then
+          mkdir -p $out/Library
+          cp -R Library/* $out/Library/
+        fi
+      '' else if (hasApp cask) then ''
+        mkdir -p "$out/Applications/${sourceRoot}"
+        cp -R . "$out/Applications/${sourceRoot}"
+
+        if [[ -e "$out/Applications/${sourceRoot}/Contents/MacOS/${getName cask}" ]]; then
+          makeWrapper "$out/Applications/${sourceRoot}/Contents/MacOS/${getName cask}" $out/bin/${cask.token}
+        elif [[ -e "$out/Applications/${sourceRoot}/Contents/MacOS/${pkgs.lib.removeSuffix ".app" sourceRoot}" ]]; then
+          makeWrapper "$out/Applications/${sourceRoot}/Contents/MacOS/${pkgs.lib.removeSuffix ".app" sourceRoot}" $out/bin/${cask.token}
+        fi
+      '' else if (hasBinary cask && !hasApp cask) then ''
+        mkdir -p $out/bin
+        cp -R ./* $out/bin
+      '' else "";
+
+    meta = {
+      homepage = cask.homepage;
+      description = cask.desc;
+      platforms = pkgs.lib.platforms.darwin;
+      mainProgram = if (hasBinary cask && !hasApp cask) then (getBinary cask) else (cask.token);
+    };
+  };
+
+  casks = builtins.fromJSON (builtins.readFile (brew-api + "/cask.json"));
+in final: prev: {
+  casks = builtins.listToAttrs (builtins.map
+    (cask: {
+      name = cask.token;
+      value = caskToDerivation cask;
+    })
+    casks);
+}