diff --git a/custom/modules/kernel.nix b/custom/modules/kernel.nix
index 7956fa7..d1170cc 100644
--- a/custom/modules/kernel.nix
+++ b/custom/modules/kernel.nix
@@ -144,7 +144,6 @@ pkgs.callPackage (
         (args.preBuild or "")
         + lib.optionalString enforceSccache ''
           mkdir -p ${lib.escapeShellArg sccacheDir}
-          chmod 0777 ${lib.escapeShellArg sccacheDir} || true
           export SCCACHE_CONF=${lib.escapeShellArg sccacheConfig}
           ${lib.optionalString (sccacheServerUds != null) "export SCCACHE_SERVER_UDS=${lib.escapeShellArg sccacheServerUds}"}
         '';
@@ -154,7 +153,6 @@ pkgs.callPackage (
           ''
             runHook preBuild
             mkdir -p ${lib.escapeShellArg sccacheDir}
-            chmod 0777 ${lib.escapeShellArg sccacheDir} || true
             export SCCACHE_CONF=${lib.escapeShellArg sccacheConfig}
             ${lib.optionalString (sccacheServerUds != null) "export SCCACHE_SERVER_UDS=${lib.escapeShellArg sccacheServerUds}"}
             export SCCACHE_ENFORCE_MARKER="$NIX_BUILD_TOP/.sccache-used"
diff --git a/custom/override.nix b/custom/override.nix
index e2d437f..718a932 100644
--- a/custom/override.nix
+++ b/custom/override.nix
@@ -164,7 +164,6 @@ let
       preConfigure = (old.preConfigure or "") + ''
 
         mkdir -p ${final.lib.escapeShellArg sandboxSccacheDir}
-        chmod 0777 ${final.lib.escapeShellArg sandboxSccacheDir} || true
         export SCCACHE_SERVER_UDS="$TMPDIR/sccache/server.sock"
         export SCCACHE_IDLE_TIMEOUT=0
         unset SCCACHE_NO_DAEMON
@@ -204,7 +203,6 @@ let
 
       preConfigure = (old.preConfigure or "") + ''
         mkdir -p ${final.lib.escapeShellArg sandboxSccacheDir}
-        chmod 0777 ${final.lib.escapeShellArg sandboxSccacheDir} || true
         export SCCACHE_WRAPPED_COMPILER_PASSTHROUGH=1
         export SCCACHE_SERVER_UDS="$TMPDIR/sccache/server.sock"
         export SCCACHE_IDLE_TIMEOUT=0
@@ -238,7 +236,6 @@ let
     }:
     ''
       mkdir -p ${final.lib.escapeShellArg sccacheDir}
-      chmod 0777 ${final.lib.escapeShellArg sccacheDir} || true
       export SCCACHE_CONF=${final.lib.escapeShellArg (
         final.writeText "sccache-stdenv.conf" ''
           [cache.disk]