fixup2

custom/modules/kernel.nix

@@ -31,14 +31,10 @@ pkgs.callPackage (
   { buildLinux, ... }@args:
   let
     llvm = pkgs.llvmPackages_latest;
-    clang = "${llvm.clang}/bin/clang";
-    clangpp = "${llvm.clang}/bin/clang++";
-    lld = "${llvm.lld}/bin/ld.lld";
-    llvmbin = "${llvm.llvm}/bin";
 
     structuredExtraConfig' =
       (with lib.kernel; {
-        # LTO_CLANG_THIN = yes; # i should find the correct one
+        LTO_CLANG_THIN = yes;
         # LTO_CLANG_FULL = no;
         # LTO_NONE = no;
       })
@@ -49,6 +45,8 @@ pkgs.callPackage (
     // {
       inherit kernelPatches extraConfig;
 
+      stdenv = llvm.stdenv;
+
       version = kver;
       modDirVersion = kver;
       src = kernel-src;
@@ -62,20 +60,6 @@ pkgs.callPackage (
       makeFlags = (args.makeFlags or [ ]) ++ [
         "LLVM=1"
         "LLVM_IAS=1"
-
-        # needed due to build script retardation
-        "CC=${clang}"
-        "HOSTCC=${clang}"
-        "HOSTCXX=${clangpp}"
-        "LD=${lld}"
-        "HOSTLD=${lld}"
-
-        "AR=${llvmbin}/llvm-ar"
-        "NM=${llvmbin}/llvm-nm"
-        "STRIP=${llvmbin}/llvm-strip"
-        "OBJCOPY=${llvmbin}/llvm-objcopy"
-        "OBJDUMP=${llvmbin}/llvm-objdump"
-        "READELF=${llvmbin}/llvm-readelf"
       ];
 
       structuredExtraConfig = structuredExtraConfig';

custom/modules/llvm-ccache-stdenv.nix

@@ -0,0 +1,91 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.ccache;
+in
+{
+  config = lib.mkIf cfg.enable {
+    # ccache должен быть виден из sandbox
+    nix.settings.extra-sandbox-paths = [ cfg.cacheDir ];
+
+    nixpkgs.overlays = [
+      (final: prev:
+        let
+          llvm = prev.llvmPackages_latest;
+
+          realClang = llvm.clang-unwrapped;
+          realClangLib = prev.lib.getLib realClang;
+
+          # "unwrapped clang", но с ccache + per-package CCACHE_DIR
+          clangUnwrappedCcache =
+            prev.stdenvNoCC.mkDerivation {
+              pname = "clang-unwrapped-ccache";
+              version = realClang.version;
+
+              outputs = [ "out" "lib" ];
+              dontUnpack = true;
+
+              installPhase = ''
+                mkdir -p "$out/bin" "$lib/lib"
+
+                mkwrap() {
+                  local name="$1"
+                  local real="$2"
+                  cat > "$out/bin/$name" <<'EOF'
+                #!${prev.bash}/bin/bash
+                set -euo pipefail
+
+                # base cache dir from NixOS module
+                base='${cfg.cacheDir}'
+
+                # prefer pname (no version), fallback to name, and strip "-<digit>..." if present
+                pkg="${pname:-${name:-unknown}}"
+                pkg="${pkg%%-[0-9]*}"
+
+                mkdir -p "$base/$pkg"
+                export CCACHE_DIR="$base/$pkg"
+                export CCACHE_UMASK=007
+
+                # improves hit rate for repeated local rebuilds
+                export CCACHE_BASEDIR="${NIX_BUILD_TOP:-/build}"
+                export CCACHE_COMPRESS=1
+                export CCACHE_SLOPPINESS=random_seed,time_macros
+
+                exec ${prev.ccache}/bin/ccache __REAL__ "$@"
+                EOF
+                  substituteInPlace "$out/bin/$name" --replace "__REAL__" "$real"
+                  chmod +x "$out/bin/$name"
+                }
+
+                mkwrap clang   ${realClang}/bin/clang
+                mkwrap clang++ ${realClang}/bin/clang++
+
+                ln -s "$out/bin/clang"   "$out/bin/cc"
+                ln -s "$out/bin/clang++" "$out/bin/c++"
+
+                # make lib.getLib(stdenv.cc.cc) point to real clang builtin headers
+                ln -s ${realClangLib}/lib/clang "$lib/lib/clang"
+              '';
+
+              meta = (realClang.meta or { }) // {
+                mainProgram = "clang";
+              };
+            };
+
+          # Wrapped clang package that points its "unwrapped" to our ccache one
+          clangWrappedCcache = llvm.clang.override { cc = clangUnwrappedCcache; };
+
+          # New stdenv: same llvm stdenv, but compiler wrapper uses our ccache-unwrapped clang
+          llvmCcacheStdenv = prev.overrideCC llvm.stdenv clangWrappedCcache;
+
+        in
+        {
+          llvmPackages_latest = llvm // {
+            stdenv = llvmCcacheStdenv;
+            clang = clangWrappedCcache;
+            clang-unwrapped = clangUnwrappedCcache;
+          };
+        })
+    ];
+  };
+}

custom/override.nix

@@ -1,4 +1,28 @@
 final: prev: {
+  ccacheWrapper = prev.ccacheWrapper.override {
+    extraConfig = ''
+      export CCACHE_COMPRESS=1
+      export CCACHE_SLOPPINESS=random_seed,time_macros
+      export CCACHE_DIR="/home/thek0tyara/Documents/cache/ccache/"
+      export CCACHE_UMASK=007
+      if [ ! -d "$CCACHE_DIR" ]; then
+        echo "====="
+        echo "Directory '$CCACHE_DIR' does not exist"
+        echo "Please create it with:"
+        echo "  sudo mkdir -m0770 '$CCACHE_DIR'"
+        echo "  sudo chown root:nixbld '$CCACHE_DIR'"
+        echo "====="
+        exit 1
+      fi
+      if [ ! -w "$CCACHE_DIR" ]; then
+        echo "====="
+        echo "Directory '$CCACHE_DIR' is not accessible for user $(whoami)"
+        echo "Please verify its access permissions"
+        echo "====="
+        exit 1
+      fi
+    '';
+  };
   llama-cpp = prev.llama-cpp.overrideAttrs (old: rec {
     version = "8124";
     src = prev.fetchFromGitHub {
@@ -13,11 +37,13 @@ final: prev: {
     (pyFinal: pyPrev: {
       sseclient-py = pyPrev.sseclient-py.overridePythonAttrs (old: rec {
         format = "pyproject";
-        nativeBuildInputs = (old.nativeBuildInputs or []) ++ (with pyPrev; [
-          hatchling
-          #pypaBuildHook
-          #pypaInstallHook
-        ]);
+        nativeBuildInputs =
+          (old.nativeBuildInputs or [ ])
+          ++ (with pyPrev; [
+            hatchling
+            #pypaBuildHook
+            #pypaInstallHook
+          ]);
         doCheck = false;
       });
 

flake.nix

@@ -53,6 +53,7 @@
         };
         modules = [
           ./custom/modules
+          ./custom/modules/llvm-ccache-stdenv.nix
           ragenix.nixosModules.default
           niri-flake.nixosModules.niri
           nix-index-database.nixosModules.default
@@ -102,6 +103,7 @@
                   "root"
                   "thek0tyara"
                 ];
+                extra-sandbox-paths = [ config.programs.ccache.cacheDir ];
                 download-buffer-size = 160000000;
               };
               boot = {
@@ -202,7 +204,13 @@
                 };
               };
               programs = {
-                ccache.enable = true;
+                ccache = {
+                  enable = true;
+                  ccacheDir = "/home/thek0tyara/Documents/cache/ccache/";
+                  packageNames = [
+                    # "linux"
+                  ];
+                };
                 niri = {
                   enable = true;
                   package = pkgs.niri-stable;