1 files changed, 6 insertions, 11 deletions
diff --git a/pkgs/applications/audio/helm/default.nix b/pkgs/applications/audio/helm/default.nix
index 86497e090f4..720fd2b11a1 100644
--- a/pkgs/applications/audio/helm/default.nix
+++ b/pkgs/applications/audio/helm/default.nix
@@ -26,10 +26,13 @@
   buildInputs = [
     xorg.libX11 xorg.libXcomposite xorg.libXcursor xorg.libXext
     xorg.libXinerama xorg.libXrender xorg.libXrandr
-    freetype alsa-lib curl libjack2 pkg-config libGLU libGL lv2
+    freetype alsa-lib curl libjack2 libGLU libGL lv2
   ];
+  nativeBuildInputs = [ pkg-config ];
 
   CXXFLAGS = "-DHAVE_LROUND";
+  enableParallelBuilding = true;
+  makeFlags = [ "DESTDIR=$(out)" ];
 
   patches = [
     # gcc9 compatibility https://github.com/mtytel/helm/pull/233
@@ -41,15 +44,7 @@
 
   prePatch = ''
     sed -i 's|usr/||g' Makefile
-  '';
-
-  buildPhase = ''
-    make lv2
-    make standalone
-  '';
-
-  installPhase = ''
-   make DESTDIR="$out" install
+    sed -i "s|/usr/share/|$out/share/|" src/common/load_save.cpp
   '';
 
   meta = with lib; {
@@ -72,7 +67,7 @@
         Simple arpeggiator
         Effects: Formant filter, stutter, delay
     '';
-    license = lib.licenses.gpl3;
+    license = lib.licenses.gpl3Plus;
     maintainers = [ maintainers.magnetophon ];
     platforms = platforms.linux;
   };