Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: brise unstable-2017-09-16 -> 0.38 https://github.com/rime/brise/releases
attrpath: brise
Checking auto update branch...
No auto update branch exists
[version] 
[version] updated version and sha256
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] skipping because derivation has no updateScript
Diff after rewrites:
diff --git a/pkgs/by-name/br/brise/package.nix b/pkgs/by-name/br/brise/package.nix
index c6fb6b1c7dc0..262f6fc21e04 100644
--- a/pkgs/by-name/br/brise/package.nix
+++ b/pkgs/by-name/br/brise/package.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation {
   pname = "brise";
-  version = "unstable-2017-09-16";
+  version = "0.38";
 
   src = fetchFromGitHub {
     owner = "rime";
     repo = "brise";
     rev = "1cfb0fe1d3a4190ce5d034f141941156dd271e80";
-    sha256 = "1l13j3cfwida0ycl874fizz2jwjvlxid589a1iciqa9y25k21ql7";
+    sha256 = "sha256-h+IgZhE+KRxZDCqh0mKnW3Ip/o+OHESZB6pF7tiQI9A=";
   };
 
   buildInputs = [ librime ];

Source url did not change.