From f46c2a9934d57b8d418c97e99e43b84991a70760 Mon Sep 17 00:00:00 2001
From: Qyriad <qyriad@qyriad.me>
Date: Mon, 16 Feb 2026 18:02:39 +0100
Subject: [PATCH] packaging: convert split derivation to hybrid
 split/multi-derivation

---
 package.nix | 39 ++++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/package.nix b/package.nix
index a336a2e..0252d88 100644
--- a/package.nix
+++ b/package.nix
@@ -27,13 +27,6 @@ in {
 	doCheck = true;
 	doInstallCheck = true;
 
-	modulesSrc = lib.fileset.toSource {
-		root = ./modules/dynamicism;
-		fileset = lib.fileset.unions [
-			./modules/dynamicism
-		];
-	};
-
 	src = lib.fileset.toSource {
 		root = ./.;
 		fileset = lib.fileset.unions [
@@ -43,6 +36,26 @@ in {
 		];
 	};
 
+	dynixModules = stdenv.mkDerivation (modulesSelf: {
+		pname = "dynix-modules";
+		inherit (self) version;
+		src = lib.fileset.toSource {
+			root = ./modules/dynamicism;
+			fileset = lib.fileset.unions [
+				./modules/dynamicism
+			];
+		};
+
+		phases = [ "unpackPhase" "patchPhase" "installPhase" ];
+
+		modulesOut = "${placeholder "out"}/share/nixos/modules/dynix";
+
+		installPhase = lib.dedent ''
+			mkdir -p "$modulesOut"
+			cp -r "$src/"* "$modulesOut/"
+		'';
+	});
+
 	cargoDeps = rustPlatform.importCargoLock {
 		lockFile = ./Cargo.lock;
 	};
@@ -55,11 +68,9 @@ in {
 		versionCheckHook
 	];
 
-	modulesOut = "${placeholder "modules"}/share/nixos/modules/dynix";
-
-	postInstall = lib.dedent ''
-		mkdir -p "$modulesOut"
-		cp -r "$modulesSrc/"* "$modulesOut/"
+	postFixup = lib.dedent ''
+		mkdir -p "$modules"
+		cp -r --reflink=auto "$dynixModules/"* "$modules/"
 	'';
 
 	passthru.mkDevShell = {
@@ -97,8 +108,10 @@ in {
 
 	meta = {
 		longDescription = lib.dedent ''
-			Default output contains the modules at top-level, meant for `import`.
+			Default output contains the Rust binary.
 			The `modules` output contains the modules prefixed under `/share/nixos/modules/dynix`.
+			The `dynix` passthru attr is a shortcut for the modules output *with* the modules prefix,
+			and thus `dynix.dynix` can be passed directly to `imports = [`.
 		'';
 		mainProgram = "dynix";
 		outputsToInstall = [ "out" "modules" ];