chore(projects/khora): add development shell

Assisted-by: openai-codex (gpt-5.6-luna)
Assisted-by: pi (gpt-5.6-sol)

projects/khora/.envrc

@@ -0,0 +1 @@
+use flake .#khora

projects/khora/README.md

@@ -28,6 +28,13 @@ nix build .#khora
 nix run .#khora
 ```
 
+For a faster development loop, enter `projects/khora` and let direnv load its
+Khora development shell, then run the source tree directly:
+
+```sh
+python -m khora
+```
+
 Khora reads the same XDG configuration and vdirs as khal. It does not configure
 accounts or perform network synchronization.
 

projects/khora/default.nix

@@ -3,6 +3,7 @@
   python3Packages,
   khal,
   gobject-introspection,
+  gsettings-desktop-schemas,
   gtk4,
   libadwaita,
   wrapGAppsHook4,
@@ -16,8 +17,9 @@ python3Packages.buildPythonApplication {
     root = ./.;
     fileset = lib.fileset.unions [
       ./data
+      ./README.md
       ./pyproject.toml
-      ./src
+      ./khora
       ./tests
     ];
   };
@@ -38,6 +40,10 @@ python3Packages.buildPythonApplication {
   ];
   nativeCheckInputs = [python3Packages.pytestCheckHook];
 
+  shellHook = ''
+    export XDG_DATA_DIRS="${gsettings-desktop-schemas}/share/gsettings-schemas/${gsettings-desktop-schemas.name}:${gtk4}/share/gsettings-schemas/${gtk4.name}:$XDG_DATA_DIRS"
+  '';
+
   postInstall = ''
     install -Dm644 data/rs.m7.Khora.desktop \
       $out/share/applications/rs.m7.Khora.desktop

projects/khora/pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
 khora = "khora.application:main"
 
 [tool.setuptools.packages.find]
-where = ["src"]
+include = ["khora*"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]