scilab-bin: refactor

{ lib, stdenv, fetchurl, undmg, makeWrapper, xorg }:

{ lib

, stdenv

, fetchurl

, makeWrapper

, undmg

, autoPatchelfHook

, alsa-lib

, ncurses5

, xorg

}:

let

  pname = "scilab-bin";

    platforms = [ "aarch64-darwin" "x86_64-darwin" "x86_64-linux" ];

    sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];

    license = lib.licenses.gpl2Only;

    mainProgram = "scilab";

  };

  darwin = stdenv.mkDerivation rec {

    inherit pname version src meta;

    nativeBuildInputs = [ undmg makeWrapper ];

    nativeBuildInputs = [

      makeWrapper

      undmg

    ];

    sourceRoot = "scilab-${version}.app";

    installPhase = ''

      runHook preInstall

      mkdir -p $out/{Applications/scilab.app,bin}

      cp -R . $out/Applications/scilab.app

      makeWrapper $out/{Applications/scilab.app/Contents/MacOS,bin}/scilab

      runHook postInstall

    '';

  };

  linux = stdenv.mkDerivation rec {

    inherit pname version src meta;

  libPath = lib.makeLibraryPath [

    stdenv.cc.cc

    xorg.libX11

    xorg.libXext

    xorg.libXi

    xorg.libXrender

    xorg.libXtst

    xorg.libXxf86vm

    nativeBuildInputs = [

      autoPatchelfHook

    ];

  fixupPhase = ''

    sed -i 's|\$(/bin/|$(|g' bin/scilab

    sed -i 's|/usr/bin/||g' bin/scilab

    sci="$out/opt/scilab-${version}"

    fullLibPath="$sci/lib/scilab:$sci/lib/thirdparty:$libPath"

    fullLibPath="$fullLibPath:$sci/lib/thirdparty/redist"

    patchelf --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \

             --set-rpath "$fullLibPath" bin/scilab-bin

    find . -name '*.so' -type f | while read file; do

      patchelf --set-rpath "$fullLibPath" "$file" 2>/dev/null

    done

  '';

    buildInputs = [

      alsa-lib

      ncurses5

      stdenv.cc.cc

    ] ++ (with xorg; [

      libX11

      libXcursor

      libXext

      libXft

      libXi

      libXrandr

      libXrender

      libXtst

      libXxf86vm

    ]);

    installPhase = ''

    mkdir -p "$out/opt/scilab-${version}"

    cp -r . "$out/opt/scilab-${version}/"

    # Create bin/ dir

    mkdir "$out/bin"

    # Creating executable symlinks

    ln -s "$out/opt/scilab-${version}/bin/scilab" "$out/bin/scilab"

    ln -s "$out/opt/scilab-${version}/bin/scilab-cli" "$out/bin/scilab-cli"

    ln -s "$out/opt/scilab-${version}/bin/scilab-adv-cli" "$out/bin/scilab-adv-cli"

    # Creating desktop config dir

    mkdir -p "$out/share/applications"

    # Moving desktop config files

    mv $out/opt/scilab-${version}/share/applications/*.desktop $out/share/applications

    # Fixing Exec paths and launching each app with a terminal

    sed -i -e "s|Exec=|Exec=$out/opt/scilab-${version}/bin/|g" \

           -e "s|Terminal=.*$|Terminal=true|g" $out/share/applications/*.desktop

    # Moving icons to the appropriate locations

    for path in $out/opt/scilab-${version}/share/icons/hicolor/*/*/*

    do

      newpath=$(echo $path | sed 's|/opt/scilab-${version}||g')

      filename=$(echo $path | sed 's|.*/||g')

      dir=$(echo $newpath | sed "s|$filename||g")

      mkdir -p $dir

      mv $path $newpath

    done

    # Removing emptied folders

    rm -rf $out/opt/scilab-${version}/share/{applications,icons}

    # Moving other share/ folders

    mv $out/opt/scilab-${version}/share/{appdata,locale,mime} $out/share

      runHook preInstall

      mkdir -p $out

      mv -t $out bin include lib share thirdparty

      sed -i \

        -e 's|\$(/bin/|$(|g' \

        -e 's|/usr/bin/||g' \

        $out/bin/{scilab,xcos}

      sed -i \

        -e "s|Exec=|Exec=$out/bin/|g" \

        -e "s|Terminal=.*$|Terminal=true|g" \

        $out/share/applications/*.desktop

      runHook postInstall

    '';

  };

in