push sheeet

pkgs/development/tools/haskell/dconf2nix/dconf2nix.nix

@@ -0,0 +1,45 @@
+{
+  mkDerivation,
+  base,
+  containers,
+  emojis,
+  fetchgit,
+  hedgehog,
+  lib,
+  optparse-applicative,
+  parsec,
+  template-haskell,
+  text,
+}:
+mkDerivation {
+  pname = "dconf2nix";
+  version = "0.1.1";
+  src = fetchgit {
+    url = "https://github.com/gvolpe/dconf2nix.git";
+    sha256 = "0frqnq7ryr4gvkbb67n0615d9h1blps2kp55ic05n7wxyh26adgz";
+    rev = "2fc3b0dfbbce9f1ea2ee89f3689a7cb95b33b63f";
+    fetchSubmodules = true;
+  };
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    base
+    containers
+    emojis
+    optparse-applicative
+    parsec
+    text
+  ];
+  executableHaskellDepends = [ base ];
+  testHaskellDepends = [
+    base
+    containers
+    hedgehog
+    parsec
+    template-haskell
+    text
+  ];
+  description = "Convert dconf files to Nix, as expected by Home Manager";
+  license = lib.licenses.asl20;
+  mainProgram = "dconf2nix";
+}

pkgs/development/tools/haskell/dconf2nix/default.nix

@@ -0,0 +1,36 @@
+{
+  haskell,
+  haskellPackages,
+  lib,
+  runCommand,
+}:
+
+let
+  dconf2nix = haskell.lib.compose.justStaticExecutables (
+    haskell.lib.compose.overrideCabal (oldAttrs: {
+      maintainers = (oldAttrs.maintainers or [ ]) ++ [
+        lib.maintainers.gvolpe
+      ];
+    }) haskellPackages.dconf2nix
+  );
+in
+
+dconf2nix.overrideAttrs (oldAttrs: {
+  passthru = (oldAttrs.passthru or { }) // {
+    updateScript = ./update.sh;
+
+    # These tests can be run with the following command.
+    #
+    # $ nix-build -A dconf2nix.passthru.tests
+    tests =
+      runCommand "dconf2nix-tests"
+        {
+          nativeBuildInputs = [
+            dconf2nix
+          ];
+        }
+        ''
+          dconf2nix > $out
+        '';
+  };
+})

pkgs/development/tools/haskell/dconf2nix/update.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p cabal2nix curl jq
+#
+# This script will update the dconf2nix derivation to the latest version using
+# cabal2nix.
+
+set -eo pipefail
+
+# This is the directory of this update.sh script.
+script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+# dconf2nix derivation created with cabal2nix.
+dconf2nix_derivation_file="${script_dir}/dconf2nix.nix"
+
+# This is the current revision of dconf2nix in Nixpkgs.
+old_version="$(sed -En 's/.*\bversion = "(.*?)".*/\1/p' "$dconf2nix_derivation_file")"
+
+# This is the latest release version of dconf2nix on GitHub.
+new_version=$(curl --silent "https://api.github.com/repos/gvolpe/dconf2nix/releases" | jq '.[0].tag_name' --raw-output)
+
+echo "Updating dconf2nix from old version $old_version to new version $new_version."
+echo "Running cabal2nix and outputting to ${dconf2nix_derivation_file}..."
+
+cabal2nix --revision "$new_version" "https://github.com/gvolpe/dconf2nix.git" > "$dconf2nix_derivation_file"
+
+echo "Finished."