flipperzero-firmware: automate getting new versions

nix/pkgs/flipperzero-firmware/default.nix

@@ -47,17 +47,15 @@ let
     protobuf
     python-with-deps
   ];
+
+  versionData = builtins.fromJSON (builtins.readFile ./version.json);
 in
 pkgs.stdenvNoCC.mkDerivation rec {
   pname = "flipper-firmware";
-  version = "RM0217-2335-0.77.2-1f5ae3c";
+  inherit (versionData) version upstreamVersion;
-  upstreamVersion = "0.77.2";
 
   src = pkgs.fetchgit {
-    url = "https://github.com/RogueMaster/flipperzero-firmware-wPlugins.git";
+    inherit (versionData.src) url rev sha256 fetchLFS fetchSubmodules deepClone leaveDotGit;
-    rev = "1f5ae3c2a2dfe69e6750e4cd181428c37f6cf92d";
-    fetchSubmodules = true;
-    sha256 = "sha256:16773vffzm3v02gpylsgi2d61r42w0lapzqirgc3w78qm13qnrbd";
   };
 
   patches = [

nix/pkgs/flipperzero-firmware/regen.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -p nix-prefetch-git -p jq -i bash
+
+set -euo pipefail
+
+MYTMPDIR="$(mktemp -d)"
+trap 'rm -rf -- "$MYTMPDIR"' EXIT
+
+LATEST_VERSION="$(curl --silent -L https://raw.githubusercontent.com/RogueMaster/flipperzero-firmware-wPlugins/HEAD/ReadMe.md | grep -oP '(?<=Latest Release )[^\]]+')"
+echo "Latest version $LATEST_VERSION" >&2
+
+UPSTREAM_VERSION="$(echo "${LATEST_VERSION}" | grep -oP '^RM[^-]+-[^-]+-\K([^-]+)(?=-[0-9a-f]+)')"
+echo "Upstream version $UPSTREAM_VERSION" >&2
+
+GIT_HASH="$(echo "${LATEST_VERSION}" | grep -oP '^RM[^-]+-[^-]+-([^-]+)-\K[0-9a-f]+')"
+echo "Git hash $GIT_HASH"
+
+nix-prefetch-git --fetch-submodules --url "https://github.com/RogueMaster/flipperzero-firmware-wPlugins" --rev "${GIT_HASH}" > $MYTMPDIR/prefetch.json
+jq $MYTMPDIR/prefetch.json >&2
+
+jq "{\"src\": ., \"version\": \"${LATEST_VERSION}\", \"upstreamVersion\": \"${UPSTREAM_VERSION}\"}" $MYTMPDIR/prefetch.json > version.json

nix/pkgs/flipperzero-firmware/version.json

@@ -0,0 +1,15 @@
+{
+  "src": {
+    "url": "https://github.com/RogueMaster/flipperzero-firmware-wPlugins",
+    "rev": "3626499318ed3b938e03a36bb77d588285f08b39",
+    "date": "2023-02-26T03:26:37-05:00",
+    "path": "/nix/store/xvisbnj42qmxcldq1s6l9rzvv6pz3720-flipperzero-firmware-wPlugins-3626499",
+    "sha256": "1rgw3cm0gkik2w02d62rrlsglxkgy4b3p7i2pbjy02dsnqylrpmk",
+    "fetchLFS": false,
+    "fetchSubmodules": true,
+    "deepClone": false,
+    "leaveDotGit": false
+  },
+  "version": "RM0226-0327-0.77.2-3626499",
+  "upstreamVersion": "0.77.2"
+}