feat: add isisdl overlay

modules/nix.nix

@@ -13,6 +13,7 @@
         mfcl3750cdwlpr = (super.callPackage ../overlays/mfcl3750cdw.nix { }).driver;
         mfcl3750cdwcupswrapper = (super.callPackage ../overlays/mfcl3750cdw.nix { }).cupswrapper;
         pppdf = (super.python3Packages.callPackage ../overlays/pppdf { });
+        isisdl = (super.python3Packages.callPackage ../overlays/isisdl.nix { });
       })
     ];
     config = {

overlays/isisdl.nix

@@ -0,0 +1,40 @@
+{ lib
+, buildPythonApplication
+, fetchPypi
+, cryptography
+, requests
+, pyyaml
+, packaging
+, colorama
+, pyinotify
+, distro
+, psutil
+}:
+buildPythonApplication rec {
+  pname = "isisdl";
+  version = "1.3.19";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-VcqaFqcoH+d1NpKq7QBVbXcbe0HfZ67kStGFiYmr/kE=";
+  };
+
+  propagatedBuildInputs = [
+    cryptography
+    requests
+    pyyaml
+    packaging
+    colorama
+    pyinotify
+    distro
+    psutil
+  ];
+
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/Emily3403/isisdl";
+    description = "A downloader for ISIS of TU-Berlin";
+    license = licenses.mit;
+  };
+}

users/gandalf/modules/neovim/default.nix

@@ -8,6 +8,7 @@
   */
 
   home.packages = with pkgs; [
+    tree-sitter # parser generator tool and an incremental parsing library
     lua-language-server
     clang-tools
     rust-analyzer

users/gandalf/modules/packages.nix

@@ -15,6 +15,7 @@
     imagemagick # software suite to create, edit, compose, or convert bitmap images
     ghostscript # postscript interpreter (mainline version)
     ventoy-full # bootable usb solution
+    isisdl # downloader for isis of tu-berlin
   ];
 
 }