don’t use content-addressed derivations (for now)

lib/default.nix

@@ -1,4 +1,4 @@
-system: { nixpkgs, ... } @ args: rec {
+system: {nixpkgs, ...} @ args: rec {
   inherit (builtins) toFile;
 
   allPrebuilds = builtins.path {
@@ -8,21 +8,18 @@ system: { nixpkgs, ... } @ args: rec {
 
   prebuilts = "${allPrebuilds}/${system}";
 
-  baseDerivation = { script, ... } @args: builtins.derivation (args // {
-    __contentAddressed = true;
-    outputHashMode = "recursive";
-    outputHashAlgo = "sha256";
-    inherit system;
-    builder = "${prebuilts}/busybox";
-    args = [
-      "sh"
-      (toFile "${args.name}-builder.sh" (
-        ''
-          set -ex
-          export PATH=${prebuilts}
-          eval "$script"
-        ''
-      ))
-    ];
-  });
+  baseDerivation = {script, ...} @ args:
+    builtins.derivation (args
+      // {
+        inherit system;
+        builder = "${prebuilts}/busybox";
+        PATH = "${prebuilts}";
+        args = [
+          "sh"
+          (toFile "${args.name}-builder.sh" ''
+            set -ex
+            eval "$script"
+          '')
+        ];
+      });
 }