Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: ath9k-htc-blobless-firmware 0 -> 1
attrpath: ath9k-htc-blobless-firmware
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] these 2 derivations will be built:
  /nix/store/9xx1bbbm9xgcvkrq0j2gn69q0bl721k7-ath9k-htc-blobless-firmware-1.4.0-updateScript.drv
  /nix/store/ymbl3c7mz04qi6yymvqi3dl6jybcrck4-packages.json.drv
building '/nix/store/9xx1bbbm9xgcvkrq0j2gn69q0bl721k7-ath9k-htc-blobless-firmware-1.4.0-updateScript.drv'...
building '/nix/store/ymbl3c7mz04qi6yymvqi3dl6jybcrck4-packages.json.drv'...

Going to be running update for following packages:
 - ath9k-htc-blobless-firmware-1.4.0

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - ath9k-htc-blobless-firmware-1.4.0: UPDATING ...
 - ath9k-htc-blobless-firmware-1.4.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/os-specific/linux/firmware/ath9k/urls-and-hashes-1.4.0.nix b/pkgs/os-specific/linux/firmware/ath9k/urls-and-hashes-1.4.0.nix
index fcccf7505cc7..d67669c93b33 100644
--- a/pkgs/os-specific/linux/firmware/ath9k/urls-and-hashes-1.4.0.nix
+++ b/pkgs/os-specific/linux/firmware/ath9k/urls-and-hashes-1.4.0.nix
@@ -1,26 +1,26 @@
 rec {
-  BASEDIR = "$NIX_BUILD_TOP";
-  BINUTILS_URL = "https://ftp.gnu.org/gnu/binutils/binutils-${BINUTILS_VER}.tar.bz2";
-  DL_DIR = "${TOOLCHAIN_DIR}/dl";
-  GMP_URL = "https://ftp.gnu.org/gnu/gmp/gmp-${GMP_VER}.tar.bz2";
-  GCC_URL = "https://ftp.gnu.org/gnu/gcc/gcc-${GCC_VER}/gcc-${GCC_VER}.tar.bz2";
-  BINUTILS_DIR = "binutils-${BINUTILS_VER}";
-  GCC_VER = "4.7.4";
-  MPFR_URL = "https://ftp.gnu.org/gnu/mpfr/mpfr-${MPFR_VER}.tar.bz2";
-  MPC_VER = "1.0.1";
-  GMP_DIR = "gmp-${GMP_VER}";
-  MPC_URL = "https://ftp.gnu.org/gnu/mpc/mpc-${MPC_VER}.tar.gz";
-  GCC_DIR = "gcc-${GCC_VER}";
-  MPFR_DIR = "mpfr-${MPFR_VER}";
-  MPC_DIR = "mpc-${MPC_VER}";
-  MPFR_VER = "3.1.1";
-  GMP_VER = "5.0.5";
-  BINUTILS_VER = "2.23.1";
-  BUILD_DIR = "${TOOLCHAIN_DIR}/build";
-  TOOLCHAIN_DIR = "${BASEDIR}/toolchain";
-  GCC_SUM = "sha256-kuYcbcOgpEnmLXKjgYX9pVAWioZwLeoHEl69PsOZYoI=";
-  MPFR_SUM = "sha256-e2bD8T3IOF8IJkyAWFPz4aju2rgHHVgvPmYZccms1f0=";
-  MPC_SUM = "sha256-7VqBXP6lJdx3jfDLN0aLnBtVSq8w2TKLFDHKcFt0AP8=";
-  GMP_SUM = "sha256-H1iKrMxBu5rtlG+f44Uhwm2LKQ0APF34B/ZWkPKq3sk=";
-  BINUTILS_SUM = "sha256-KrLlsD4IbRLGKV+DGtrUaz4UEKOiNJM6Lo+sZssuehk=";
+  BASEDIR="$NIX_BUILD_TOP";
+BINUTILS_URL = "https://ftp.gnu.org/gnu/binutils/binutils-${BINUTILS_VER}.tar.bz2";
+DL_DIR = "${TOOLCHAIN_DIR}/dl";
+GMP_URL = "https://ftp.gnu.org/gnu/gmp/gmp-${GMP_VER}.tar.bz2";
+GCC_URL = "https://ftp.gnu.org/gnu/gcc/gcc-${GCC_VER}/gcc-${GCC_VER}.tar.bz2";
+BINUTILS_DIR = "binutils-${BINUTILS_VER}";
+GCC_VER = "4.7.4";
+MPFR_URL = "https://ftp.gnu.org/gnu/mpfr/mpfr-${MPFR_VER}.tar.bz2";
+MPC_VER = "1.0.1";
+GMP_DIR = "gmp-${GMP_VER}";
+MPC_URL = "https://ftp.gnu.org/gnu/mpc/mpc-${MPC_VER}.tar.gz";
+GCC_DIR = "gcc-${GCC_VER}";
+MPFR_DIR = "mpfr-${MPFR_VER}";
+MPC_DIR = "mpc-${MPC_VER}";
+MPFR_VER = "3.1.1";
+GMP_VER = "5.0.5";
+BINUTILS_VER = "2.23.1";
+BUILD_DIR = "${TOOLCHAIN_DIR}/build";
+TOOLCHAIN_DIR = "${BASEDIR}/toolchain";
+GCC_SUM = "sha256-kuYcbcOgpEnmLXKjgYX9pVAWioZwLeoHEl69PsOZYoI=";
+MPFR_SUM = "sha256-e2bD8T3IOF8IJkyAWFPz4aju2rgHHVgvPmYZccms1f0=";
+MPC_SUM = "sha256-7VqBXP6lJdx3jfDLN0aLnBtVSq8w2TKLFDHKcFt0AP8=";
+GMP_SUM = "sha256-H1iKrMxBu5rtlG+f44Uhwm2LKQ0APF34B/ZWkPKq3sk=";
+BINUTILS_SUM = "sha256-KrLlsD4IbRLGKV+DGtrUaz4UEKOiNJM6Lo+sZssuehk=";
 }

Package version did not change.