run bootstrap commands with cache

lib/with-config.nix

@@ -130,6 +130,12 @@ let
   ${pkgs.git}/bin/git add flake.lock
   '';
 
+  cacheWrapper = self: name: app: pkgs.writeScript name ''
+    ${config.pkgs.nix}/bin/nix --option extra-substituters 'https://tek.cachix.org' \
+    --option extra-trusted-public-keys 'tek.cachix.org-1:+sdc73WFq8aEKnrVv5j/kuhmnW2hQJuqdPJF5SnaCBk=' \
+    run ${self}:${app} -- $@
+  '';
+
   envSystemAllowed = env:
   env.systems == null || (elem config.system env.systems);
 
@@ -149,6 +155,7 @@ in basic // {
   downloadStaticCli
   bootstrapWithStaticCli
   bootstrapWithDynamicCli
+  cacheWrapper
   envSystemAllowed
   ;
 }

local.nix

@@ -106,8 +106,8 @@ hix.pro ({config, lib, ...}: {
         program = "${config.outputs.packages.hix}/bin/hix";
       };
 
-      new = let
-        prog = util.bootstrapWithDynamicCli "hix-new" ''
+      new-nocache = let
+        prog = util.bootstrapWithDynamicCli "hix-new-nocache" ''
         $exe new --hix-url '${config.internal.hixUrl}' "$@"
         nix run .#gen-cabal
         '';
@@ -116,8 +116,15 @@ hix.pro ({config, lib, ...}: {
         program = "${prog}";
       };
 
-      bootstrap = let
-        prog = util.bootstrapWithDynamicCli "hix-bootstrap" ''
+      new = let
+        prog = util.cacheWrapper inputs.self "hix-new" "new-nocache";
+      in {
+        type = "app";
+        program = "${prog}";
+      };
+
+      bootstrap-nocache = let
+        prog = util.bootstrapWithDynamicCli "hix-bootstrap-nocache" ''
         $exe bootstrap --hix-url '${config.internal.hixUrl}' "$@"
         nix run .#gen-cabal
         '';
@@ -126,6 +133,13 @@ hix.pro ({config, lib, ...}: {
         program = "${prog}";
       };
 
+      bootstrap = let
+        prog = util.cacheWrapper inputs.self "hix-bootstrap" "bootstrap-nocache";
+      in {
+        type = "app";
+        program = "${prog}";
+      };
+
       release-nix = let
         release = import ./lib/release.nix { inherit config lib util; };
       in {