flake: switch to nixComponents from monolithic nix

This is the new componenentized packaging abstraction
for newer versions of nix. This doesn't bring in any
of the cli components, unlike the old approach.

Author: xokdvium

default.nix

@@ -7,7 +7,7 @@
   llvmPackages,
   meson,
   ninja,
-  nix,
+  nixComponents,
   pkg-config,
   nlohmann_json,
   python312,
@@ -31,7 +31,10 @@ stdenv.mkDerivation {
   nativeCheckInputs = [ lit ];
 
   buildInputs = [
-    nix
+    nixComponents.nix-main
+    nixComponents.nix-expr
+    nixComponents.nix-cmd
+    nixComponents.nix-flake
     gtest
     boost
     llvmPackages.llvm

flake.nix

@@ -33,15 +33,15 @@
             callPackage
             stdenv
             ;
-          nix = nixVersions.nix_2_30;
+          nixComponents = nixVersions.nixComponents_2_30;
           llvmPackages = llvmPackages_19;
           nixf = callPackage ./libnixf { };
-          nixt = callPackage ./libnixt { inherit nix; };
+          nixt = callPackage ./libnixt { inherit nixComponents; };
           nixd = callPackage ./nixd {
-            inherit nix nixf nixt;
+            inherit nixComponents nixf nixt;
             inherit llvmPackages;
           };
-          nixdMono = callPackage ./. { inherit nix llvmPackages; };
+          nixdMono = callPackage ./. { inherit nixComponents llvmPackages; };
           nixdLLVM = nixdMono.override { stdenv = if stdenv.isDarwin then stdenv else llvmPackages.stdenv; };
           regressionDeps = with pkgs; [
             clang-tools
@@ -52,7 +52,7 @@
             nativeBuildInputs = old.nativeBuildInputs ++ regressionDeps;
             shellHook = ''
               export PATH="${pkgs.clang-tools}/bin:$PATH"
-              export NIX_SRC=${nix.src}
+              export NIX_SRC=${nixComponents.src}
               export NIX_PATH=nixpkgs=${nixpkgs}
             '';
             hardeningDisable = [ "fortify" ];

libnixt/default.nix

@@ -4,9 +4,9 @@
   meson,
   ninja,
   pkg-config,
-  nix,
   gtest,
   boost,
+  nixComponents,
 }:
 
 stdenv.mkDerivation {
@@ -33,7 +33,10 @@ stdenv.mkDerivation {
   ];
 
   buildInputs = [
-    nix
+    nixComponents.nix-main
+    nixComponents.nix-expr
+    nixComponents.nix-cmd
+    nixComponents.nix-flake
     gtest
     boost
   ];

nixd/default.nix

@@ -4,7 +4,7 @@
   meson,
   ninja,
   pkg-config,
-  nix,
+  nixComponents,
   nixf,
   nixt,
   llvmPackages,
@@ -39,7 +39,9 @@ stdenv.mkDerivation {
   ];
 
   buildInputs = [
-    nix
+    nixComponents.nix-expr
+    nixComponents.nix-main
+    nixComponents.nix-cmd
     nixf
     nixt
     llvmPackages.llvm