mayo STEP-viewer & converter

flake.nix

@@ -23,6 +23,7 @@
           blender = pkgs.callPackage ./pkgs/misc/blender { };
           bpy = pkgs.python3Packages.callPackage ./pkgs/development/python-modules/bpy { };
           pysdf = pkgs.python3Packages.callPackage ./pkgs/development/python-modules/pysdf { };
+          mayo = pkgs.libsForQt5.callPackage ./pkgs/misc/mayo { };
         in
         {
           packages = {
@@ -30,6 +31,7 @@
             bpy = bpy;
             pysdf = pysdf;
             gazebo = ros.humble.gazebo;
+            mayo = mayo;
           };
 
           devShells.ros = 
@@ -68,9 +70,9 @@
               RMW_IMPLEMENTATION = "rmw_fastrtps_dynamic_cpp";
             };
 
-          devShells.bpy = pkgs.mkShell { packages = [ bpy ]; };
-          devShells.pysdf = pkgs.mkShell { packages = [ pysdf ]; };
+          devShells.bpy = pkgs.mkShell { packages = [ bpy pysdf ]; };
+          devShells.mayo = pkgs.mkShell { packages = [ mayo ]; };
           devShells.blender = pkgs.mkShell { packages = [ blender ]; };
         }
       );
-}
+}

pkgs/misc/mayo/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, qtbase
+, qmake
+, wrapQtAppsHook
+, opencascade-occt
+}:
+
+stdenv.mkDerivation rec {
+  pname = "mayo";
+  version = "0.6.0";
+
+  src = fetchFromGitHub {
+    owner = "fougue";
+    repo = "mayo";
+    rev = "v${version}";
+    hash = "sha256-seRk02jYiABjoO35AG47ioCByBIdLibJ4QHLeXW8cXQ=";
+  };
+
+  buildInputs = [ qtbase opencascade-occt ];
+  nativeBuildInputs = [ wrapQtAppsHook qmake ];
+  propagatedBuildInputs = [ qtbase ];
+  
+  buildPhase = ''
+    export CASCADE_INC_DIR=${opencascade-occt}/include/opencascade
+    export CASCADE_LIB_DIR=${opencascade-occt}/lib
+    qmake ${src} CASCADE_INC_DIR=$CASCADE_INC_DIR CASCADE_LIB_DIR=$CASCADE_LIB_DIR
+    make -j $NIX_BUILD_CORES
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp mayo $out/bin
+  '';
+
+  meta = with lib; {
+    description = "3D CAD viewer and converter based on Qt + OpenCascade";
+    homepage = "https://github.com/fougue/mayo";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ movefasta  ];
+  };
+}