Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: flashprog 0 -> 1
attrpath: flashprog
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/fc5dhmfkrd2fgqrlasjcvdsnfn4hbrhh-packages.json.drv
building '/nix/store/fc5dhmfkrd2fgqrlasjcvdsnfn4hbrhh-packages.json.drv'...

Going to be running update for following packages:
 - flashprog-1.5

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - flashprog-1.5: UPDATING ...
 - flashprog-1.5: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/fl/flashprog/package.nix b/pkgs/by-name/fl/flashprog/package.nix
index 70184632d119..81157a01f6fd 100644
--- a/pkgs/by-name/fl/flashprog/package.nix
+++ b/pkgs/by-name/fl/flashprog/package.nix
@@ -17,7 +17,7 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "flashprog";
-  version = "1.5";
+  version = "1.6";
 
   strictDeps = true;
   __structuredAttrs = true;
@@ -25,7 +25,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = fetchgit {
     url = "https://review.sourcearcade.org/flashprog";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-laU2S7SPFCso/HzPSpbEM6hAE5/XYkNoBqFTT4PU8TU=";
+    hash = "sha256-Ih6cRUbmKIKRt8dIGNBbaLDomNvVdcl5P/lRBAzwwTI=";
   };
 
   nativeBuildInputs = [

No auto update branch exists
Old version 1.5" not present in master derivation file with contents: {
  fetchgit,
  gitUpdater,
  lib,
  libftdi1,
  libgpiod,
  libjaylink,
  libusb1,
  meson,
  ninja,
  pciutils,
  pkg-config,
  stdenv,
  withJlink ? true,
  withGpio ? stdenv.hostPlatform.isLinux,
}:

stdenv.mkDerivation (finalAttrs: {
  pname = "flashprog";
  version = "1.6";

  strictDeps = true;
  __structuredAttrs = true;

  src = fetchgit {
    url = "https://review.sourcearcade.org/flashprog";
    tag = "v${finalAttrs.version}";
    hash = "sha256-Ih6cRUbmKIKRt8dIGNBbaLDomNvVdcl5P/lRBAzwwTI=";
  };

  nativeBuildInputs = [
    meson
    ninja
    pkg-config
  ];

  buildInputs = [
    libftdi1
    libusb1
  ]
  ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
    pciutils
  ]
  ++ lib.optionals withJlink [
    libjaylink
  ]
  ++ lib.optionals withGpio [
    libgpiod
  ];

  postPatch = ''
    # Remove these rules from flashprog to avoid conflicts with libftdi
    sed -i"" '/ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001"/d' "util/50-flashprog.rules"
    sed -i"" '/ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6010"/d' "util/50-flashprog.rules"
    sed -i"" '/ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011"/d' "util/50-flashprog.rules"
    sed -i"" '/ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6014"/d' "util/50-flashprog.rules"
  '';

  postInstall = ''
    install -Dm644 ../util/50-flashprog.rules "$out/lib/udev/rules.d/50-flashprog.rules"
  '';

  doInstallCheck = true;

  passthru.updateScript = gitUpdater {
    rev-prefix = "v";
    allowedVersions = "^[0-9\\.]+$";
  };

  meta = {
    homepage = "https://flashprog.org";
    description = "Utility for reading, writing, erasing and verifying flash ROM chips";
    changelog = "https://flashprog.org/wiki/Flashprog/v${finalAttrs.version}";
    license = lib.licenses.gpl2;
    maintainers = with lib.maintainers; [
      felixsinger
      funkeleinhorn
      jmbaur
    ];
    platforms = lib.platforms.all;
    mainProgram = "flashprog";
  };
})