fermyon-spin: 3.0.0 -> 3.5.0; add updateScript

[Release on GitHub](https://github.com/spinframework/spin/releases/tag/v3.5.0)
[Compare changes on GitHub](https://github.com/spinframework/spin/compare/v3.0.0...v3.5.0)

pkgs/by-name/fe/fermyon-spin/package.nix

@@ -19,27 +19,24 @@ let
     }
     .${system} or (throw "Unsupported system: ${system}");
 
-  # TODO: It'd be nice to write an update script that would update all of these
-  # hashes together.
-  packageHash =
-    {
-      x86_64-linux = "sha256-r/F3Tj3WeeL2R27ussX+ebFWpW+8z2e7tdBK4MHFMpk=";
-      aarch64-linux = "sha256-BSFxDJeY7fOOxDqAV+6FJf0hup1Y5IJ/czqwc4W7qSA=";
-      x86_64-darwin = "sha256-T6J9IjfXdt9DnZksndAmZRkYyH/5H60J7V6xU0ltD2A=";
-      aarch64-darwin = "sha256-6x+0PB5/2oqYDVNiNhc0xcs/ESCLvvSsWtm2KlTIeBo=";
-    }
-    .${system} or (throw "Unsupported system: ${system}");
+  packageHashes = {
+    x86_64-linux = "sha256-TWWT60H8KtZlJTRY+RnS2pP7r0eKBDzGVm890uGdtHU=";
+    aarch64-linux = "sha256-MBZ/AgUz5dg8tFj4q+alnwlHu3d6/rfYZk9B1jYnGbw=";
+    x86_64-darwin = "sha256-F2wgyyf0L2Ci5MV0VQD5CnjckudbgvQEpNbZUIkw9Gc=";
+    aarch64-darwin = "sha256-9Onvzsc2UInjgX9AeWMFNvpUv2Y4i5wUR6z3Igyrzy0=";
+  };
 
+  packageHash = packageHashes.${system} or (throw "Unsupported system: ${system}");
 in
 stdenv.mkDerivation rec {
   pname = "fermyon-spin";
-  version = "3.0.0";
+  version = "3.5.0";
 
   # Use fetchurl rather than fetchzip as these tarballs are built by the project
   # and not by GitHub (and thus are stable) - this simplifies the update script
   # by allowing it to use the output of `nix store prefetch-file`.
   src = fetchurl {
-    url = "https://github.com/fermyon/spin/releases/download/v${version}/spin-v${version}-${platform}.tar.gz";
+    url = "https://github.com/spinframework/spin/releases/download/v${version}/spin-v${version}-${platform}.tar.gz";
     hash = packageHash;
   };
 
@@ -63,13 +60,18 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  meta = with lib; {
+  passthru = {
+    inherit packageHashes; # needed by updateScript
+    updateScript = ./update.py;
+  };
+
+  meta = {
     description = "Framework for building, deploying, and running fast, secure, and composable cloud microservices with WebAssembly";
-    homepage = "https://github.com/fermyon/spin";
-    sourceProvenance = with sourceTypes; [ binaryNativeCode ];
-    license = with licenses; [ asl20 ];
+    homepage = "https://github.com/spinframework/spin";
+    sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
+    license = with lib.licenses; [ asl20 ];
     mainProgram = "spin";
     maintainers = [ ];
-    platforms = platforms.linux ++ platforms.darwin;
+    platforms = builtins.attrNames packageHashes;
   };
 }

pkgs/by-name/fe/fermyon-spin/update.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p python3 bash nix-update jq
+import subprocess
+from os.path import join, dirname
+
+# Outer keys are as in Nix, the inner dict's values are as in upstream.
+# We set oldHash and newHash fields in the inner dict later.
+systems = {
+  "x86_64-linux": {"os": "linux", "arch": "amd64"},
+  "x86_64-darwin": {"os": "macos", "arch": "amd64"},
+  "aarch64-linux": {"os": "linux", "arch": "aarch64"},
+  "aarch64-darwin": {"os": "macos", "arch": "aarch64"},
+}
+
+# This will set the version correctly,
+# and will also set the hash for one of the systems.
+subprocess.run([
+  "nix-update",
+  "fermyon-spin",
+  "--version-regex",
+  r"^v([\d\.]*)",
+  "--url",
+  "https://github.com/spinframework/spin"
+])
+
+newVer = subprocess.run(
+  ["nix-instantiate", "--eval", "--raw", "-A", "fermyon-spin.version"], capture_output=True, encoding="locale"
+).stdout
+
+for nixTuple in systems:
+  url = (
+    "https://github.com/spinframework/spin/releases/download/v"
+    f"{newVer}/spin-v{newVer}-{systems[nixTuple]['os']}-{systems[nixTuple]['arch']}.tar.gz"
+  )
+
+  systems[nixTuple]["oldHash"] = subprocess.run(
+    ["nix-instantiate", "--eval", "--raw", "-A", f"fermyon-spin.passthru.packageHashes.{nixTuple}"],
+    capture_output=True,
+    encoding="locale",
+  ).stdout
+
+  systems[nixTuple]["newHash"] = subprocess.run(
+    ["bash", "-c", f"nix store prefetch-file {url} --json | jq -r '.hash'"],
+    capture_output=True,
+    encoding="locale",
+  ).stdout.strip()  # Has a newline
+
+with open(join(dirname(__file__), "package.nix"), "r") as f:
+  file = f.read()
+
+for nixTuple in systems:
+  file = file.replace(systems[nixTuple]["oldHash"], systems[nixTuple]["newHash"])
+
+with open(join(dirname(__file__), "package.nix"), "w") as f:
+  f.write(file)

pkgs/by-name/fe/fermyon-spin/update.sh

@@ -1,31 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i bash -p jq
-#shellcheck shell=bash
-
-CURRENT_HASH=""
-
-print_hash() {
-    OS="$1"
-    ARCH="$2"
-    VERSION="$3"
-
-    URL="https://github.com/fermyon/spin/releases/download/v${VERSION}/spin-v${VERSION}-${OS}-${ARCH}.tar.gz"
-    echo
-    CURRENT_HASH=$(nix store prefetch-file "$URL" --json | jq -r '.hash')
-
-    echo "${ARCH}-${OS}: $CURRENT_HASH"
-}
-
-if [[ -z "$VER" && -n "$1" ]]; then
-    VER="$1"
-fi
-
-if [[ -z "$VER" ]]; then
-    echo "No 'VER' environment variable provided, skipping"
-else
-    print_hash "linux"  "amd64"   "$VER"
-    print_hash "linux"  "aarch64" "$VER"
-    print_hash "macos" "amd64"   "$VER"
-    print_hash "macos" "aarch64" "$VER"
-fi
-