fix: move vendoring of nixpkgs and select into root devshell

devShell.nix

@@ -1,4 +1,4 @@
-{ ... }:
+{ inputs, ... }:
 {
   perSystem =
     {
@@ -39,6 +39,10 @@
         shellHook = ''
           echo -e "${ansiEscapes.green}switch to another dev-shell using: select-shell${ansiEscapes.reset}"
           export PRJ_ROOT=$(git rev-parse --show-toplevel)
+
+          # vendoring / needed for impure tests
+          ln -sfT ${self'.packages.clan-cli.nixpkgs} "$PRJ_ROOT/pkgs/clan-cli/clan_cli/nixpkgs"
+          ln -sfT ${inputs.nix-select} "$PRJ_ROOT/pkgs/clan-cli/clan_cli/select"
         '';
       };
     };

pkgs/clan-cli/flake-module.nix

@@ -35,9 +35,8 @@
     in
     {
       devShells.clan-cli = pkgs.callPackage ./shell.nix {
-        inherit (self'.packages) clan-cli;
         inherit self';
-        inherit (inputs) nix-select;
+        inherit (self'.packages) clan-cli;
       };
       packages = {
         clan-cli = pkgs.callPackage ./default.nix {

pkgs/clan-cli/shell.nix

@@ -1,7 +1,6 @@
 {
   lib,
   nix-unit,
-  nix-select,
   clan-cli,
   mkShell,
   ruff,
@@ -42,10 +41,6 @@ mkShell {
     # Add clan command to PATH
     export PATH="$PKG_ROOT/bin":"$PATH"
 
-    # Needed for impure tests
-    ln -sfT ${clan-cli.nixpkgs} "$PKG_ROOT/clan_cli/nixpkgs"
-    ln -sfT ${nix-select} "$PKG_ROOT/clan_cli/select"
-
     # Generate classes.py from inventory schema
     # This file is in .gitignore
     ${self'.packages.classgen}/bin/classgen ${self'.legacyPackages.schemas.inventory-schema-abstract}/schema.json $PKG_ROOT/clan_lib/nix_models/inventory.py