Merge pull request #2863 from Fuuzetsu/yi

yi: improve expression

pkgs/applications/editors/yi/yi.nix

@@ -5,6 +5,12 @@
 , split, tasty, tastyHunit, tastyQuickcheck, time, transformersBase
 , uniplate, unixCompat, unorderedContainers, utf8String, vty
 , xdgBasedir
+, withPango ? true
+
+# User may need extra dependencies for their configuration file so we
+# want to specify it here to have them available when wrapping the
+# produced binary.
+, extraDepends ? [ ]
 }:
 
 cabal.mkDerivation (self: {
@@ -15,21 +21,43 @@ cabal.mkDerivation (self: {
   isExecutable = true;
   buildDepends = [
     binary Cabal cautiousFile concreteTyperep dataDefault derive Diff
-    dlist dyre filepath fingertree glib gtk hashable hint lens mtl
-    pango parsec pointedlist QuickCheck random regexBase regexTdfa safe
+    dlist dyre filepath fingertree hashable hint lens mtl
+    parsec pointedlist QuickCheck random regexBase regexTdfa safe
     split time transformersBase uniplate unixCompat unorderedContainers
     utf8String vty xdgBasedir
-  ];
+  ] ++ (if withPango then [ pango gtk glib ] else [ ]) ++ extraDepends;
   testDepends = [
     filepath HUnit QuickCheck tasty tastyHunit tastyQuickcheck
   ];
   buildTools = [ alex ];
-  configureFlags = "-fpango";
+  configureFlags = if withPango then "-fpango" else "-f-pango";
   doCheck = false;
+
+  # https://ghc.haskell.org/trac/ghc/ticket/9170
+  noHaddock = self.ghc.version == "7.6.3";
+
+  # Allows Yi to find the libraries it needs at runtime.
+  postInstall = ''
+    mv $out/bin/yi $out/bin/.yi-wrapped
+    cat - > $out/bin/yi <<EOF
+    #! ${self.stdenv.shell}
+    # Trailing : is necessary for it to pick up Prelude &c.
+    export GHC_PACKAGE_PATH=$(${self.ghc.GHCGetPackages} ${self.ghc.version} \
+                              | sed 's/-package-db\ //g' \
+                              | sed 's/^\ //g' \
+                              | sed 's/\ /:/g')\
+    :$out/lib/ghc-${self.ghc.version}/package.conf.d/yi-$version.installedconf:
+
+    eval exec $out/bin/.yi-wrapped "\$@"
+    EOF
+    chmod +x $out/bin/yi
+  '';
+
   meta = {
     homepage = "http://haskell.org/haskellwiki/Yi";
     description = "The Haskell-Scriptable Editor";
-    license = "GPL";
+    license = self.stdenv.lib.licenses.gpl2;
     platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.fuuzetsu ];
   };
 })