Add develop shell

flake.nix

@@ -68,5 +68,6 @@
           stateVersion = "21.11";
         };
       };
+      devShell.${system} = import ./shell.nix { pkgs = pkgsUnstable; };
     };
 }

shell.nix

@@ -0,0 +1,30 @@
+{ pkgs ? import <nixpkgs-unstable> { } }:
+
+pkgs.mkShell rec {
+  name = "qois-infrastructure-shell";
+  buildInputs = let
+    extensions = with pkgs.vscode-extensions; [ jnoortheen.nix-ide ];
+    vscode-with-extensions =
+      pkgs.vscode-with-extensions.override { vscodeExtensions = extensions; };
+  in with pkgs; [ vscode-with-extensions nixfmt rnix-lsp ];
+  LANG = "C.UTF-8";
+  LC_ALL = "C.UTF-8";
+  shellHook = ''
+    # Bring xdg data dirs of dependencies and current program into the
+    # environment. This will allow us to get shell completion if any
+    # and there might be other benefits as well.
+    xdg_inputs=( "''${buildInputs[@]}" )
+    for p in "''${xdg_inputs[@]}"; do
+      if [[ -d "$p/share" ]]; then
+        XDG_DATA_DIRS="''${XDG_DATA_DIRS}''${XDG_DATA_DIRS+:}$p/share"
+      fi
+    done
+    export XDG_DATA_DIRS
+
+    # Make sure we support the pure case as well as non nixos cases
+    # where dynamic bash completions were not sourced.
+    #if ! type _completion_loader > /dev/null; then
+    #  . ${pkgs.bash-completion}/etc/profile.d/bash_completion.sh
+    #fi
+  '';
+}