feat: refactor packages and add update scripts

packages/ggman/update.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq nix-prefetch
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
+PKG_FILE="$SCRIPT_DIR/package.nix"
+
+cd "$ROOT_DIR"
+
+extract_hash() {
+  sed 's/\x1b\[[0-9;]*m//g' | grep 'got:' | tail -1 | grep -oP 'sha256-[A-Za-z0-9+/]+='
+}
+
+echo "fetching latest tag..."
+LATEST=$(curl -sf "https://api.github.com/repos/tkw1536/ggman/tags?per_page=1" | jq -r '.[0].name')
+CURRENT=$(grep 'version = ' "$PKG_FILE" | head -1 | sed 's/.*"\(.*\)".*/\1/')
+
+if [[ "$CURRENT" == "$LATEST" ]]; then
+  echo "ggman already at $LATEST"
+  exit 0
+fi
+
+echo "updating ggman: $CURRENT -> $LATEST"
+
+echo "  prefetching source..."
+BASE32=$(nix-prefetch-url --unpack "https://github.com/tkw1536/ggman/archive/${LATEST}.tar.gz" 2>/dev/null)
+SRC_HASH=$(nix hash convert --to sri "sha256:$BASE32")
+echo "  source: $SRC_HASH"
+
+echo "  computing vendor hash..."
+BUILD_OUTPUT=$(nix build --no-link --impure --expr "
+  let
+    pkgs = (builtins.getFlake \"path:$ROOT_DIR\").inputs.nixpkgs-master.legacyPackages.\${builtins.currentSystem};
+  in (pkgs.buildGoModule.override { go = pkgs.go_1_26; } {
+    pname = \"ggman\";
+    version = \"$LATEST\";
+    src = pkgs.fetchFromGitHub {
+      owner = \"tkw1536\";
+      repo = \"ggman\";
+      rev = \"$LATEST\";
+      hash = \"$SRC_HASH\";
+    };
+    vendorHash = \"\";
+  }).goModules
+" 2>&1) || true
+VENDOR_HASH=$(echo "$BUILD_OUTPUT" | extract_hash) || true
+
+if [[ -z "$VENDOR_HASH" ]]; then
+  echo "  error: failed to compute vendor hash"
+  echo "$BUILD_OUTPUT"
+  exit 1
+fi
+echo "  vendor: $VENDOR_HASH"
+
+OLD_SRC=$(grep 'sha256 = ' "$PKG_FILE" | grep -oP 'sha256-[A-Za-z0-9+/]+=')
+OLD_VENDOR=$(grep 'vendorHash = ' "$PKG_FILE" | grep -oP 'sha256-[A-Za-z0-9+/]+=')
+
+sed -i "s|version = \"$CURRENT\"|version = \"$LATEST\"|" "$PKG_FILE"
+sed -i "s|$OLD_SRC|$SRC_HASH|" "$PKG_FILE"
+sed -i "s|$OLD_VENDOR|$VENDOR_HASH|" "$PKG_FILE"
+
+echo "ggman updated to $LATEST"