From 5729cba1654a8e1b9d77ff2ba71d66f49d540103 Mon Sep 17 00:00:00 2001
From: Samuel Dionne-Riel <samuel@dionne-riel.com>
Date: Mon, 11 Sep 2023 18:27:21 -0400
Subject: [PATCH] bin/kernel-normalize-config: Rely on a "support" system

---
 bin/kernel-normalize-config             |  2 +-
 support/kernel-config/README.adoc       | 18 +++++++++++
 support/kernel-config/configuration.nix | 11 +++++++
 support/kernel-config/default.nix       | 41 +++++++++++++++++++++++++
 4 files changed, 71 insertions(+), 1 deletion(-)
 create mode 100644 support/kernel-config/README.adoc
 create mode 100644 support/kernel-config/configuration.nix
 create mode 100644 support/kernel-config/default.nix

diff --git a/bin/kernel-normalize-config b/bin/kernel-normalize-config
index e6d89746..f3e7a1bb 100755
--- a/bin/kernel-normalize-config
+++ b/bin/kernel-normalize-config
@@ -66,7 +66,7 @@ args =
   end
 
 # 
-args << File.join(ROOT, "default.nix")
+args << File.join(ROOT, "support/kernel-config/default.nix")
 
 @file =
   if params["file"]
diff --git a/support/kernel-config/README.adoc b/support/kernel-config/README.adoc
new file mode 100644
index 00000000..2d2892a8
--- /dev/null
+++ b/support/kernel-config/README.adoc
@@ -0,0 +1,18 @@
+= Kernel configuration
+
+This directory holds the *suggested* kernel configuration.
+
+This is used by the `bin/kernel-normalize*` helpers.
+
+In your systems, feel free to override any of those with what you prefer.
+
+The **required** options are found in `modules/kernel-config.nix`.
+
+== Goals
+
+The goals for these options are as follow:
+
+ * Remove all unneeded options to reduce compilation time
+ * Select the appropriate defaults
+
+A device can change the options as needed.
diff --git a/support/kernel-config/configuration.nix b/support/kernel-config/configuration.nix
new file mode 100644
index 00000000..bfbd256b
--- /dev/null
+++ b/support/kernel-config/configuration.nix
@@ -0,0 +1,11 @@
+{ lib, ... }:
+
+let
+  inherit (lib)
+    mkDefault
+  ;
+in
+{
+  mobile.kernel.structuredConfig = [
+  ];
+}
diff --git a/support/kernel-config/default.nix b/support/kernel-config/default.nix
new file mode 100644
index 00000000..88bf93c8
--- /dev/null
+++ b/support/kernel-config/default.nix
@@ -0,0 +1,41 @@
+{ pkgs ? (import ../../pkgs.nix {})
+, device
+}@args':
+
+let
+  eval = import ../../lib/eval-with-configuration.nix ({
+    inherit device pkgs;
+    configuration = [
+      (
+        { config, lib, ... }:
+        let
+          inherit (lib)
+          filter
+          concatStringsSep
+          showWarnings
+          ;
+          # Handle assertions and warnings
+          failedAssertions = map (x: x.message) (filter (x: !x.assertion) config.assertions);
+
+          # This `eval` wraps assertion checks
+          _out = if failedAssertions != []
+            then throw "\nFailed assertions:\n${concatStringsSep "\n" (map (x: "- ${x}") failedAssertions)}"
+            else showWarnings config.warnings { inherit config; };
+        in
+        {
+          imports = [
+            ./configuration.nix
+          ];
+          options = {
+            _out = lib.mkOption {
+            };
+          };
+          config = {
+            inherit _out;
+          };
+        }
+      )
+    ];
+  });
+in
+  eval.config._out