diff --git a/pkgs/clan-cli/default.nix b/pkgs/clan-cli/default.nix
index d75e84cd..cb76ab46 100644
--- a/pkgs/clan-cli/default.nix
+++ b/pkgs/clan-cli/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, python3
+{ python3
 , ruff
 , runCommand
 , installShellFiles
@@ -37,10 +36,10 @@ let
   # - vendor the jsonschema nix lib (copy instead of symlink).
   # - lib.cleanSource prevents unnecessary rebuilds when `self` changes.
   source = runCommand "clan-cli-source" { } ''
-    cp -r ${lib.cleanSource ./.} $out
+    cp -r ${./.} $out
     chmod -R +w $out
     rm $out/clan_cli/config/jsonschema
-    cp -r ${lib.cleanSource (self + /lib/jsonschema)} $out/clan_cli/config/jsonschema
+    cp -r ${self + /lib/jsonschema} $out/clan_cli/config/jsonschema
   '';
 in
 python3.pkgs.buildPythonPackage {
diff --git a/pkgs/clan-cli/pyproject.toml b/pkgs/clan-cli/pyproject.toml
index 61ecf053..f2d65021 100644
--- a/pkgs/clan-cli/pyproject.toml
+++ b/pkgs/clan-cli/pyproject.toml
@@ -8,8 +8,8 @@ description = "cLAN CLI tool"
 dynamic = [ "version" ]
 scripts = { clan = "clan_cli:main" }
 
-[tool.setuptools.packages.find]
-where = []
+[tool.setuptools.packages]
+find = {}
 
 [tool.setuptools.package-data]
 clan_cli = ["config/jsonschema/*"]