diff --git a/pkgs/applications/office/todoman/default.nix b/pkgs/applications/office/todoman/default.nix
index 092a776ae606..3eb7f4f57d02 100644
--- a/pkgs/applications/office/todoman/default.nix
+++ b/pkgs/applications/office/todoman/default.nix
@@ -1,4 +1,9 @@
-{ stdenv, python3, glibcLocales, installShellFiles, jq }:
+{ stdenv
+, python3
+, glibcLocales
+, installShellFiles
+, jq
+}:
 
 let
   inherit (python3.pkgs) buildPythonApplication fetchPypi;
@@ -12,22 +17,36 @@ buildPythonApplication rec {
     sha256 = "1aq7f63bhs9dnwzp15nfr07f2ki6s3lnqfap3b09rhchn6lfznwb";
   };
 
-    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
+  ];
+  propagatedBuildInputs = with python3.pkgs; [
+    atomicwrites
+    click
+    click-log
+    click-repl
+    configobj
+    humanize
+    icalendar
+    parsedatetime
+    python-dateutil
+    pyxdg
+    tabulate
+    urwid
+  ];
 
-  nativeBuildInputs = [ installShellFiles ];
-  buildInputs = [ glibcLocales ];
-  propagatedBuildInputs = with python3.pkgs;
-    [ atomicwrites click click-log click-repl configobj humanize icalendar parsedatetime
-      python-dateutil pyxdg tabulate urwid ];
+  checkInputs = with python3.pkgs; [
+    flake8
+    flake8-import-order
+    freezegun
+    hypothesis
+    pytest
+    pytestrunner
+    pytestcov
+    glibcLocales
+  ];
 
-  checkInputs = with python3.pkgs;
-    [ flake8 flake8-import-order freezegun hypothesis pytest pytestrunner pytestcov ];
-
-  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