top-level: Make config-overriden stdenv bootstrap more normally

1 files changed, 17 insertions, 0 deletions

diff --git a/pkgs/stdenv/custom/default.nix b/pkgs/stdenv/custom/default.nix
new file mode 100644
index 000000000000..2f2f495b388b
--- /dev/null
+++ b/pkgs/stdenv/custom/default.nix
@@ -0,0 +1,17 @@
+{ system, allPackages, platform, crossSystem, config, ... } @ args:
+
+rec {
+  vanillaStdenv = (import ../. (args // {
+    # Remove config.replaceStdenv to ensure termination.
+    config = builtins.removeAttrs config [ "replaceStdenv" ];
+  })).stdenv;
+
+  buildPackages = allPackages {
+    # It's OK to change the built-time dependencies
+    allowCustomOverrides = true;
+    bootStdenv = vanillaStdenv;
+    inherit system platform crossSystem config;
+  };
+
+  stdenvCustom = config.replaceStdenv { pkgs = buildPackages; };
+}