diff --git a/flake.nix b/flake.nix
index 9bad87f..f86e00a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -101,14 +101,20 @@
           path = ./.;
           name = "configuration.nix";
         };
+        runCmdInSrc = name: cmd:
+          pkgs.runCommandNoCC name {} ''
+            cd ${src}
+            ${cmd}
+            mkdir $out
+          '';
       in {
         nvim = nixvim.lib.${system}.check.mkTestDerivationFromNixvimModule {
           pkgs = import nixpkgs {inherit system overlays;};
           module = ./nvim/standalone.nix;
         };
-        fmt = pkgs.callPackage ./fmt.nix {inherit src;};
-        lint = pkgs.callPackage ./lint.nix {inherit src;};
-        typos = pkgs.callPackage ./lint.nix {inherit src;};
+        fmt = runCmdInSrc "fmt-src" "${lib.getExe self.formatter.${system}} --check .";
+        lint = runCmdInSrc "lint-src" "${lib.getExe pkgs.statix} check .";
+        typos = runCmdInSrc "typos-src" "${lib.getExe pkgs.typos} .";
       }
     );
 
diff --git a/fmt.nix b/fmt.nix
deleted file mode 100644
index 84b7369..0000000
--- a/fmt.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  lib,
-  stdenvNoCC,
-  alejandra,
-  src,
-}:
-stdenvNoCC.mkDerivation {
-  name = "fmt-src";
-  inherit src;
-  buildPhase = "${lib.getExe alejandra} --check .";
-  installPhase = "mkdir $out";
-}
diff --git a/lint.nix b/lint.nix
deleted file mode 100644
index 5c80e23..0000000
--- a/lint.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  lib,
-  stdenvNoCC,
-  statix,
-  src,
-}:
-stdenvNoCC.mkDerivation {
-  name = "lint-src";
-  inherit src;
-  buildPhase = "${lib.getExe statix} check .";
-  installPhase = "mkdir $out";
-}
diff --git a/typos.nix b/typos.nix
deleted file mode 100644
index 9a02768..0000000
--- a/typos.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  lib,
-  stdenvNoCC,
-  typos,
-  src,
-}:
-stdenvNoCC.mkDerivation {
-  name = "typos-src";
-  inherit src;
-  buildPhase = "${lib.getExe typos} .";
-  installPhase = "mkdir $out";
-}