fritzing: 0.9.3b -> 0.9.4

Notes:

* fritzing still needs an older version of libgit2
* releases no longer directly correspond to tags in the git repository, they are
  using build numbers instead
* the fritzing-parts repository is no longer versioned at all, the master branch
  contains the latest stable release
* a `parts.db` file needs to be generated from the fritzing-parts files during
  the build

pkgs/applications/science/electronics/fritzing/default.nix

@@ -1,41 +1,81 @@
 { mkDerivation, stdenv, fetchpatch, fetchFromGitHub, qmake, pkgconfig
-, qtbase, qtsvg, qtserialport, boost, libgit2
+, qtbase, qtsvg, qttools, qtserialport, boost, libgit2
 }:
 
+let
+  # build number corresponding to a release, has no further relation
+  # see https://github.com/fritzing/fritzing-app/releases/tag/CD-498
+  fritzingBuild = "498";
+  # SHA256 of the fritzing-parts HEAD on the master branch,
+  # which contains the latest stable parts definitions
+  partsSha = "e79a69765026f3fda8aab1b3e7a4952c28047a62";
+in
+
 mkDerivation rec {
   pname = "fritzing";
-  version = "0.9.3b";
+  version = "0.9.4-${fritzingBuild}";
 
   src = fetchFromGitHub {
     owner = "fritzing";
     repo = "fritzing-app";
-    rev = version;
-    sha256 = "0hpyc550xfhr6gmnc85nq60w00rm0ljm0y744dp0z88ikl04f4s3";
+    rev = "CD-${fritzingBuild}";
+    sha256 = "0aljj2wbmm1vd64nhj6lh9qy856pd5avlgydsznya2vylyz20p34";
   };
 
   parts = fetchFromGitHub {
     owner = "fritzing";
     repo = "fritzing-parts";
-    rev = version;
-    sha256 = "1d2v8k7p176j0lczx4vx9n9gbg3vw09n2c4b6w0wj5wqmifywhc1";
+    name = "fritzing-parts";
+    rev = partsSha;
+    sha256 = "0spka33a5qq34aq79j01arw1aly4vh0hzv7mahryhdlcdk22qqvc";
   };
 
-  patches = [(fetchpatch {
-    name = "0001-Squashed-commit-of-the-following.patch";
-    url = "https://aur.archlinux.org/cgit/aur.git/plain/0001-Squashed-commit-of-the-following.patch?h=fritzing";
-    sha256 = "1cv6myidxhy28i8m8v13ghzkvx5978p9dcd8v7885y0l1h3108mf";
-  })];
-
   buildInputs = [ qtbase qtsvg qtserialport boost libgit2 ];
 
-  nativeBuildInputs = [ qmake pkgconfig ];
+  nativeBuildInputs = [ qmake pkgconfig qttools ];
+
+  patches = [(fetchpatch {
+    name = "fix-libgit2-version.patch";
+    url = "https://github.com/fritzing/fritzing-app/commit/472951243d70eeb40a53b1f7e16e6eab0588d079.patch";
+    sha256 = "0v1zi609cjnqac80xgnk23n54z08g1lia37hbzfl8jcq9sn9adak";
+  })];
+
+  postPatch = ''
+    substituteInPlace phoenix.pro \
+      --replace 'LIBGIT_STATIC = true' 'LIBGIT_STATIC = false'
+
+    substituteInPlace tools/linux_release_script/release.sh \
+      --replace 'git status' 'echo >/dev/null' \
+      --replace 'git clean' 'echo >/dev/null' \
+      --replace 'git clone' 'echo >/dev/null' \
+      --replace 'release_folder="' 'release_folder="$out" #' \
+      --replace './Fritzing -db' '# run after fixup'
+
+    substituteInPlace src/fapplication.cpp \
+      --replace 'PartsChecker::getSha(dir.absolutePath());' '"${partsSha}";'
+  '';
+
+  buildPhase = ''
+    bash tools/linux_release_script/release.sh ${version}
+  '';
+
+  installPhase = ''
+    rm "$out/Fritzing" # remove script file
+    mkdir "$out/bin"
+    mv "$out/lib/Fritzing" "$out/bin/Fritzing"
+    mkdir --parents "$out/share/applications" "$out/share/metainfo"
+    mv --target-directory="$out/share/applications" "$out/org.fritzing.Fritzing.desktop"
+    mv --target-directory="$out/share/metainfo" "$out/org.fritzing.Fritzing.appdata.xml"
+    cp --recursive --no-target-directory "$parts" "$out/fritzing-parts"
+  '';
+
+  postFixup = ''
+    # generate the parts.db file
+    QT_QPA_PLATFORM=offscreen "$out/bin/Fritzing" -db "$out/fritzing-parts/parts.db" -pp "$out/fritzing-parts" -folder "$out"
+  '';
 
   qmakeFlags = [ "phoenix.pro" ];
 
-  preConfigure = ''
-    ln -s "$parts" parts
-  '';
-
   meta = {
     description = "An open source prototyping tool for Arduino-based projects";
     homepage = "https://fritzing.org/";