diff --git a/pkgs/applications/science/math/scilab-bin/default.nix b/pkgs/applications/science/math/scilab-bin/default.nix
index 59e64bd0b8ef..f6da20531385 100644
--- a/pkgs/applications/science/math/scilab-bin/default.nix
+++ b/pkgs/applications/science/math/scilab-bin/default.nix
@@ -1,4 +1,13 @@
-{ lib, stdenv, fetchurl, undmg, makeWrapper, xorg }:
+{ lib
+, stdenv
+, fetchurl
+, makeWrapper
+, undmg
+, autoPatchelfHook
+, alsa-lib
+, ncurses5
+, xorg
+}:
 
 let
   pname = "scilab-bin";
@@ -26,88 +35,69 @@ let
     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
+    buildInputs = [
+      alsa-lib
+      ncurses5
+      stdenv.cc.cc
+    ] ++ (with xorg; [
+      libX11
+      libXcursor
+      libXext
+      libXft
+      libXi
+      libXrandr
+      libXrender
+      libXtst
+      libXxf86vm
+    ]);
 
-    sci="$out/opt/scilab-${version}"
-    fullLibPath="$sci/lib/scilab:$sci/lib/thirdparty:$libPath"
-    fullLibPath="$fullLibPath:$sci/lib/thirdparty/redist"
+    installPhase = ''
+      runHook preInstall
 
-    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
-  '';
+      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
 
-  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 postInstall
+    '';
   };
 in
 if stdenv.isDarwin then darwin else linux