nix: simplify build of gomobile

Signed-off-by: Jakub Sokołowski <jakub@status.im>

nix/pkgs/gomobile/default.nix

@@ -36,33 +36,18 @@ in buildGoPackage rec {
       --replace \
         'tmpdir, err = ioutil.TempDir(gomobilepath, "work-")' \
         "tmpdir = filepath.Join(os.Getenv(\"NIX_BUILD_TOP\"), \"work\")"
-
-    echo "Creating $dev"
-    mkdir -p $dev/src/$goPackagePath
-    echo "Copying from $src"
-    cp -a $src/. $dev/src/$goPackagePath
   '';
 
   preBuild = ''
     mkdir $NIX_BUILD_TOP/gomobile-work $NIX_BUILD_TOP/work
   '';
 
-  postInstall =
-    let
-      inherit (stdenv.lib) makeBinPath makeLibraryPath;
-    in ''
-    mkdir -p $out $bin/lib
-
-    ln -s ${ncurses5}/lib/libncursesw.so.5 $bin/lib/libtinfo.so.5
-    ${if isDarwin then ''
-    wrapProgram $bin/bin/gomobile \
-      --prefix "PATH" : "${makeBinPath [ xcodeWrapper ]}" \
-      --prefix "LD_LIBRARY_PATH" : "${makeLibraryPath [ ncurses5 zlib ]}:$bin/lib"
-  '' else ''
-    wrapProgram $bin/bin/gomobile \
-      --prefix "LD_LIBRARY_PATH" : "${makeLibraryPath [ ncurses5 zlib ]}:$bin/lib"
-  ''}
-    $bin/bin/gomobile init
+  # Necessary for GOPATH when using gomobile.
+  postInstall = ''
+    echo "Creating $out"
+    mkdir -p $out/src/$goPackagePath
+    echo "Copying from $src"
+    cp -a $src/. $out/src/$goPackagePath
   '';
 
   src = fetchgit {
@@ -71,8 +56,6 @@ in buildGoPackage rec {
     url = "https://go.googlesource.com/mobile";
   };
 
-  outputs = [ "bin" "dev" "out" ];
-
   meta = with stdenv.lib; {
     description = "A tool for building and running mobile apps written in Go.";
     longDescription = "Gomobile is a tool for building and running mobile apps written in Go.";

nix/status-go/mobile/build.nix

@@ -45,7 +45,7 @@ in buildGoPackage {
     mkdir ${NIX_GOWORKDIR}
 
     export GO111MODULE=off
-    export GOPATH=${gomobile.dev}:$GOPATH
+    export GOPATH=${gomobile.out}:$GOPATH
     export NIX_GOWORKDIR=${NIX_GOWORKDIR}
 
   '' + optionalString (platform == "android") ''