comet-gog_heroic: init at 0.2.0; comet-gog: refactor

pkgs/by-name/co/comet-gog/package.nix

···
 {
+  comet-gog_kind ? "latest",
+
   lib,
+  stdenv,
   rustPlatform,
   fetchFromGitHub,
-  protobuf,
+  buildPackages,
 }:
 
-rustPlatform.buildRustPackage rec {
+let
+  versionInfoTable = {
+    "latest" = {
+      version = "0.3.1";
+      srcHash = "sha256-asg2xp9A5abmsF+CgOa+ScK2sQwSNFQXD5Qnm76Iyhg=";
+      cargoHash = "sha256-K0lQuk2PBwnVlkRpYNo4Z7to/Lx2fY6RIlkgmMjvEtc=";
+    };
+    # version pin that is compatible with heroic
+    "heroic" = {
+      version = "0.2.0";
+      srcHash = "sha256-LAEt2i/SRABrz+y2CTMudrugifLgHNxkMSdC8PXYF0E=";
+      cargoHash = "sha256-SvDE+QqaSK0+4XgB3bdmqOtwxBDTlf7yckTR8XjmMXc=";
+    };
+  };
+
+  versionInfo = versionInfoTable.${comet-gog_kind};
+in
+rustPlatform.buildRustPackage (finalAttrs: {
   pname = "comet-gog";
-  version = "0.3.1";
+  inherit (versionInfo) version cargoHash;
 
   src = fetchFromGitHub {
     owner = "imLinguin";
     repo = "comet";
-    tag = "v${version}";
-    hash = "sha256-asg2xp9A5abmsF+CgOa+ScK2sQwSNFQXD5Qnm76Iyhg=";
+    tag = "v${finalAttrs.version}";
+    hash = versionInfo.srcHash;
     fetchSubmodules = true;
   };
 
-  cargoHash = "sha256-K0lQuk2PBwnVlkRpYNo4Z7to/Lx2fY6RIlkgmMjvEtc=";
-
   # error: linker `aarch64-linux-gnu-gcc` not found
   postPatch = ''
     rm .cargo/config.toml
   '';
 
-  env.PROTOC = lib.getExe' protobuf "protoc";
+  # TECHNICALLY, we could remove this, but then we'd be using the vendored precompiled protoc binary...
+  env.PROTOC = lib.getExe' buildPackages.protobuf "protoc";
 
   meta = {
-    changelog = "https://github.com/imLinguin/comet/releases/tag/v${version}";
+    changelog = "https://github.com/imLinguin/comet/releases/tag/${finalAttrs.src.tag}";
     description = "Open Source implementation of GOG Galaxy's Communication Service";
     homepage = "https://github.com/imLinguin/comet";
     license = lib.licenses.gpl3Plus;
     mainProgram = "comet";
     maintainers = with lib.maintainers; [ tomasajt ];
   };
-}
+})

pkgs/top-level/all-packages.nix

···
 
   cocoapods-beta = lowPrio (callPackage ../development/tools/cocoapods { beta = true; });
 
+  comet-gog_heroic = callPackage ../by-name/co/comet-gog/package.nix { comet-gog_kind = "heroic"; };
+
   compass = callPackage ../development/tools/compass { };
 
   cone = callPackage ../development/compilers/cone {