flake: fix musl static stdenv devShell (fix nix flake check)

pkgs.pkgsStatic.glibcLocales is null, so the string coercion was failing
for devShells against static stdenvs

Change-Id: Iee8e1042a852133ce0432627d72a85e97c17055e

1 files changed, 3 insertions, 3 deletions

diff --git a/flake.nix b/flake.nix
index 62037e1e3..11c461896 100644
--- a/flake.nix
+++ b/flake.nix
@@ -328,9 +328,6 @@
               installFlags = "sysconfdir=$(out)/etc";
               strictDeps = false;
 
-              # Required to make non-NixOS Linux not complain about missing locale files during configure in a dev shell
-              ${if stdenv.isLinux then "LOCALE_ARCHIVE" else null} = "${pkgs.glibcLocales}/lib/locale/locale-archive";
-
               shellHook = ''
                 PATH=$prefix/bin:$PATH
                 unset PYTHONPATH
@@ -339,6 +336,9 @@
                 # Make bash completion work.
                 XDG_DATA_DIRS+=:$out/share
               '';
+            } // lib.optionalAttrs (stdenv.isLinux && pkgs.glibcLocales != null) {
+              # Required to make non-NixOS Linux not complain about missing locale files during configure in a dev shell
+              LOCALE_ARCHIVE = "${lib.getLib pkgs.glibcLocales}/lib/locale/locale-archive";
             });
         in
         forAllSystems (system: