Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: fastmail-desktop 0 -> 1
attrpath: fastmail-desktop
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/d58nhwpk0dsz7h21s4vn6k35pxp0m6nj-packages.json.drv
building '/nix/store/d58nhwpk0dsz7h21s4vn6k35pxp0m6nj-packages.json.drv'...
structuredAttrs is enabled

Going to be running update for following packages:
 - fastmail-desktop-1.7.0

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - fastmail-desktop-1.7.0: UPDATING ...
 - fastmail-desktop-1.7.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/fa/fastmail-desktop/sources.nix b/pkgs/by-name/fa/fastmail-desktop/sources.nix
index c68a65a3636b..d299393e6dec 100644
--- a/pkgs/by-name/fa/fastmail-desktop/sources.nix
+++ b/pkgs/by-name/fa/fastmail-desktop/sources.nix
@@ -1,5 +1,5 @@
 # Generated by ./update.sh - do not update manually!
-# Last updated: 2026-09-04
+# Last updated: 2026-09-15
 { fetchurl, fetchzip }:
 {
   aarch64-darwin = {
@@ -10,17 +10,17 @@
     };
   };
   aarch64-linux = {
-    version = "1.7.0";
+    version = "1.7.1";
     src = fetchurl {
-      url = "https://dl.fastmailcdn.com/desktop/production/linux/arm64/com.fastmail.Fastmail-1.7.0-arm64.AppImage";
-      hash = "sha256-sS5xTsCOLrN9Ua2ew02ODKcNxkTfJlDMMZaIwRvofCI=";
+      url = "https://dl.fastmailcdn.com/desktop/production/linux/arm64/com.fastmail.Fastmail-1.7.1-arm64.AppImage";
+      hash = "sha512-/EFUUlOmVRKqStTv2MrYo9Hmx8hed21/gCITc0j0ggBDPHH/T9YiRDYAdBs6SjVZb+CIERzken0Dk5Fwc52bFA==";
     };
   };
   x86_64-linux = {
-    version = "1.7.0";
+    version = "1.7.1";
     src = fetchurl {
-      url = "https://dl.fastmailcdn.com/desktop/production/linux/x64/com.fastmail.Fastmail-1.7.0.AppImage";
-      hash = "sha256-1D7ZvNMV6VmPzoQNfUlmXakylx2iDyr+UhkWdgzZp1c=";
+      url = "https://dl.fastmailcdn.com/desktop/production/linux/x64/com.fastmail.Fastmail-1.7.1.AppImage";
+      hash = "sha512-YSL0z1eTUhXe/uWQn+gZvH7qtHLC2TMwtEZDuukbdIw4azfY9RM8r+3rAzZqh8pQ1yKwYa1IhvtEbKYp3c+Idg==";
     };
   };
 }

No auto update branch exists
Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A fastmail-desktop
Received ExitFailure 1 when running
Raw command: nix --extra-experimental-features nix-command log -f . fastmail-desktop --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]"
Standard output:

error: build log of 'fastmail-desktop' is not available