Export pkgs and overlays

2 files changed, 35 insertions, 0 deletions

diff --git a/overlays/compat.nix b/overlays/compat.nix
new file mode 100644
index 0000000..8874b52
--- /dev/null
+++ b/overlays/compat.nix
@@ -0,0 +1,13 @@
+# Returns a list of overlays such that this file can be used for the value of
+# nixpkgs-overlays in NIX_PATH.
+#
+# See: hosts/common.nix
+# See: https://nixos.org/manual/nixpkgs/stable/#sec-overlays-lookup
+
+let
+  overlays = import ./default.nix;
+in
+[
+  overlays.additions
+  overlays.modifications
+]
diff --git a/overlays/default.nix b/overlays/default.nix
new file mode 100644
index 0000000..81a163a
--- /dev/null
+++ b/overlays/default.nix
@@ -0,0 +1,22 @@
+# This module lists the different overlays. These are exported in `flake.nix`.
+
+{
+  # This overlay adds all of our custom packages.
+  additions = final: _prev: import ../pkgs final;
+
+  # This overlay does typical overlay stuff such as adding patches, bumping versions, etc.
+  modifications = final: prev: {
+    # Use patched version from Karl.
+    smu = prev.smu.overrideAttrs (old: {
+      version = "2022-08-01";
+      src = final.fetchFromGitHub {
+        owner = "karlb";
+        repo = "smu";
+        rev = "bd03c5944b7146d07a88b58a2dd0d264836e3322";
+        hash = "sha256-Jx7lJ9UTHAOCgPxF2p7ZoZBZ476bLXN5dI0vspusmGo=";
+      };
+      env.NIX_CFLAGS_COMPILE = (old.env.NIX_CFLAGS_COMPILE or "") +
+                               (final.lib.strings.optionalString (final.stdenv.cc.isGNU or false) " -Wno-maybe-uninitialized");
+    });
+  };
+}