diff --git a/pkgs/applications/office/todoman/default.nix b/pkgs/applications/office/todoman/default.nix
index ca733f5fad1..163673afb25 100644
--- a/pkgs/applications/office/todoman/default.nix
+++ b/pkgs/applications/office/todoman/default.nix
@@ -17,17 +17,9 @@ buildPythonApplication rec {
     sha256 = "16brw2zhm5vamffin6qjb0lxjlj3ba40vaficl851nw2xh2mrdhy";
   };
 
-  LOCALE_ARCHIVE = stdenv.lib.optionalString stdenv.isLinux
-    "${glibcLocales}/lib/locale/locale-archive";
-  LANG = "en_US.UTF-8";
-  LC_TYPE = "en_US.UTF-8";
-
   nativeBuildInputs = [
     installShellFiles
   ];
-  buildInputs = [
-    glibcLocales
-  ];
   propagatedBuildInputs = with python3.pkgs; [
     atomicwrites
     click
@@ -51,12 +43,10 @@ buildPythonApplication rec {
     pytest
     pytestrunner
     pytestcov
+    glibcLocales
   ];
 
-  makeWrapperArgs = [
-    "--set LOCALE_ARCHIVE ${glibcLocales}/lib/locale/locale-archive"
-    "--set CHARSET en_us.UTF-8"
-  ];
+  LC_ALL = "en_US.UTF-8";
 
   postInstall = ''
     installShellCompletion --bash contrib/completion/bash/_todo