refactor(python): install dependencies inside the virtualenv.

This is in order to prevent long compilation time required for
development dependencies.

devenv.nix

@@ -6,24 +6,21 @@
   ...
 }:
 
-let
-  python-packages =
-    p: with p; [
-      python-lsp-server
-      importmagic
-      epc
-    ];
-in
 {
   # https://devenv.sh/packages/
-  packages = with pkgs; [
-    pdm
-    (python3.withPackages python-packages)
-  ];
+  packages = with pkgs; [ ];
 
   languages.python = {
     enable = true;
-    venv.enable = true;
+    venv = {
+      enable = true;
+      requirements = ''
+        pdm
+        python-lsp-server
+        importmagic
+        epc
+      '';
+    };
   };
 
   # Make diffs fantastic

pyproject.toml

@@ -4,11 +4,12 @@ version = "1.0.0"
 description = "Default template for PDM package"
 authors = [
     {name = "Reza (Shahin) Khanipour", email = "[email protected]"},
+    {name = "Reza (Shahin) Khanipour", email = "[email protected]"},
 ]
 dependencies = [
     "copier>=9.3.1",
 ]
-requires-python = "==3.12.*"
+requires-python = "==3.11.*"
 readme = "README.md"
 license = {text = "MIT"}
 

template/{% if language == 'Python' %}{{ project_name }}{% endif %}/devenv.nix.jinja

@@ -1,16 +1,5 @@
 {% extends pathjoin("includes", "base.nix.jinja") %}
 
-{% block variables %}
-let
-  python-packages =
-    p: with p; [
-      python-lsp-server
-      importmagic
-      epc
-    ];
-in
-{% endblock %}
-
 {% block packages %}
     pdm
     (python3.withPackages python-packages)
@@ -19,7 +8,15 @@ in
 {% block languages %}
   python = {
     enable = true;
-    venv.enable = true;
+    venv = {
+      enable = true;
+      requirements = ''
+pdm
+python-lsp-server
+importmagic
+epc
+'';
+    };
   };
 {% endblock %}