runsh

hosts/nixdesk/profiles/devshells.nix

@@ -0,0 +1,44 @@
+{
+  pkgs,
+  lib,
+  ...
+}: let
+  shells = {
+    silk-fhs = "with pkgs; [glfw libGL assimp wgpu-native]";
+  };
+in {
+  environment.systemPackages = [
+    (pkgs.writeShellApplication {
+      name = "runsh";
+
+      runtimeInputs = [pkgs.nix];
+
+      text = ''
+        ${lib.concatMapAttrsStringSep "\n" (name: value: ''
+            runshell-${name}() {
+              # shellcheck disable=SC2016
+              nix shell --impure --expr '(import <nixpkgs> {}).buildFHSEnv {
+                name = "devshell";
+                runScript = "$SHELL";
+                targetPkgs = pkgs: ${value};
+              }' --command devshell
+            }
+          '')
+          shells}
+        if [ -z "''${1:-}" ]; then
+          echo "available shells:"
+          ${lib.concatMapAttrsStringSep "\n" (name: _: "echo ${name}") shells}
+          exit
+        fi
+
+        case $1 in
+        ${lib.concatMapAttrsStringSep "\n" (name: _: ''
+            "${name}") runshell-${name} ;;
+          '')
+          shells}
+          *) echo no such shell ;;
+        esac
+      '';
+    })
+  ];
+}