Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: discord 0 -> 1
attrpath: discord
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/25lndcqpm4gmk2av3y22g48jr3hgqxny-packages.json.drv
building '/nix/store/25lndcqpm4gmk2av3y22g48jr3hgqxny-packages.json.drv'...

Going to be running update for following packages:
 - discord-0.0.119

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - discord-0.0.119: UPDATING ...
 - discord-0.0.119: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/applications/networking/instant-messengers/discord/sources.json b/pkgs/applications/networking/instant-messengers/discord/sources.json
index 0461d1c6117e..0369feee81ff 100644
--- a/pkgs/applications/networking/instant-messengers/discord/sources.json
+++ b/pkgs/applications/networking/instant-messengers/discord/sources.json
@@ -1,8 +1,8 @@
 {
   "linux-canary": {
-    "hash": "sha256-2o0SBMbtozibAIL7lHDJ2LfNjbDKY578PvcNdFs/AC4=",
-    "url": "https://canary.dl2.discordapp.net/apps/linux/0.0.844/discord-canary-0.0.844.tar.gz",
-    "version": "0.0.844"
+    "hash": "sha256-XsTDL1TJc7xb2lOJfbgJjKgfdKFYhEQpqY9e1NSogBY=",
+    "url": "https://canary.dl2.discordapp.net/apps/linux/0.0.845/discord-canary-0.0.845.tar.gz",
+    "version": "0.0.845"
   },
   "linux-development": {
     "hash": "sha256-EVkjWoqWl9Z+iHCLPOLu4PIUb2wC3HVcPVjOVz++IVw=",
@@ -20,9 +20,9 @@
     "version": "0.0.119"
   },
   "osx-canary": {
-    "hash": "sha256-qh5+hCEQXivdugj5jzS+i1ftmyh6l2YEE63oS+qV2Go=",
-    "url": "https://canary.dl2.discordapp.net/apps/osx/0.0.948/DiscordCanary.dmg",
-    "version": "0.0.948"
+    "hash": "sha256-mutdy8HFmqBY6Tmp3ukhOdICUUwZQm6YibzkF5x4qo0=",
+    "url": "https://canary.dl2.discordapp.net/apps/osx/0.0.949/DiscordCanary.dmg",
+    "version": "0.0.949"
   },
   "osx-development": {
     "hash": "sha256-y840b3WlWnSK+22l7AoasQbDmbB+2LOzbxA13yJxrPA=",

Package version did not change.