diff --git a/home/dev/nix-flake.nix b/home/dev/nix-flake.nix
index f3c4bb9..1200459 100644
--- a/home/dev/nix-flake.nix
+++ b/home/dev/nix-flake.nix
@@ -60,7 +60,9 @@
           --push (-p)        # also push the bookmark to remote after committing
           message?: string   # commit message; opens an interactive message if omitted
         ] {
-          nixfm
+          if ($env.PWD | str starts-with "${config.modules.dev.flakeManagement.repoPath}") {
+            nixfm
+          }
 
           if ($message == null) {
             jj commit
diff --git a/home/dev/repositories.nix b/home/dev/repositories.nix
index 8c19078..e7004cf 100644
--- a/home/dev/repositories.nix
+++ b/home/dev/repositories.nix
@@ -32,6 +32,11 @@
   config = lib.mkMerge [
     (lib.mkIf config.modules.dev.flakeRepos.enable {
       home = {
+        activation.flakeReposSync = lib.hm.dag.entryAfter ["writeBoundary"] ''
+          run ${lib.getExe pkgs.flake-repos} sync \
+            --registry "${config.modules.dev.flakeRepos.registryPath}" \
+            --projects-root "${config.modules.dev.flakeRepos.projectsRoot}"
+        '';
         packages = [pkgs.flake-repos];
         sessionVariables = {
           FLAKE_REPOS_PROJECTS_ROOT = config.modules.dev.flakeRepos.projectsRoot;