dconf2nix: init at 0.5.0

pkgs/development/haskell-modules/non-hackage-packages.nix

···
   multi-ghc-travis = throw ("haskellPackages.multi-ghc-travis has been renamed"
     + " to haskell-ci, which is now on hackage");
 
+  dconf2nix = self.callPackage ../tools/haskell/dconf2nix/dconf2nix.nix { };
+
   # https://github.com/channable/vaultenv/issues/1
   vaultenv = self.callPackage ../tools/haskell/vaultenv { };
 

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

···
+{ mkDerivation, base, containers, fetchgit, optparse-applicative
+, parsec, stdenv, text
+}:
+mkDerivation {
+  pname = "dconf2nix";
+  version = "0.0.5";
+  src = fetchgit {
+    url = "https://github.com/gvolpe/dconf2nix.git";
+    sha256 = "0immbx4bgfq3xmbbrpw441nx0sdpm4cp64s7qbvcbvllp4gbivpg";
+    rev = "848ff9966db21c66e61a19c04ab6dfc9270eb78e";
+    fetchSubmodules = true;
+  };
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    base containers optparse-applicative parsec text
+  ];
+  executableHaskellDepends = [ base ];
+  description = "Convert dconf files to Nix, as expected by Home Manager";
+  license = stdenv.lib.licenses.asl20;
+}

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

···
+{ haskell, haskellPackages, lib, runCommand }:
+
+let
+  dconf2nix =
+    haskell.lib.justStaticExecutables
+      (haskell.lib.overrideCabal haskellPackages.dconf2nix (oldAttrs: {
+        maintainers = (oldAttrs.maintainers or []) ++ [
+          lib.maintainers.gvolpe
+        ];
+      }));
+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

···
+#!/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."

pkgs/top-level/all-packages.nix

···
 
   dclxvi = callPackage ../development/libraries/dclxvi { };
 
+  dconf2nix = callPackage ../development/tools/haskell/dconf2nix { };
+
   dcraw = callPackage ../tools/graphics/dcraw { };
 
   dcfldd = callPackage ../tools/system/dcfldd { };