Detect latest upstream versions

.gitignore

@@ -0,0 +1,22 @@
+*.AppImage
+*.tar.gz
+
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~

assets/ghostty.appdata.xml

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <content_rating type="oars-1.0" />
+  <id>com.mitchellh.ghostty</id>
+  <metadata_license>MIT</metadata_license>
+  <project_license>MIT</project_license>
+  <name>Ghostty</name>
+  <icon type="remote">https://raw.githubusercontent.com/ghostty-org/ghostty/refs/heads/main/images/icons/icon_256.png</icon>
+  <summary>Fast, native, feature-rich terminal emulator pushing modern features</summary>
+  <description>
+    <p>
+      Ghostty is a terminal emulator that differentiates itself by being fast,
+      feature-rich, and native. While there are many excellent terminal
+      emulators available, they all force you to choose between speed,
+      features, or native UIs.  Ghostty provides all three.
+    </p>
+
+    <p>
+      In all categories, I am not trying to claim that Ghostty is the best
+      (i.e. the fastest, most feature-rich, or most native). But Ghostty is
+      competitive in all three categories and Ghostty doesn't make you choose
+      between them.
+    </p>
+
+    <p>
+      Ghostty also intends to push the boundaries of what is possible with a
+      terminal emulator by exposing modern, opt-in features that enable CLI
+      tool developers to build more feature rich, interactive applications.
+    </p>
+
+    <p>
+      While aiming for this ambitious goal, our first step is to make Ghostty
+      one of the best fully standards compliant terminal emulator, remaining
+      compatible with all existing shells and software while supporting all of
+      the latest terminal innovations in the ecosystem. You can use Ghostty as
+      a drop-in replacement for your existing terminal emulator.
+    </p>
+  </description>
+
+  <launchable type="desktop-id">com.mitchellh.ghostty.desktop</launchable>
+
+  <url type="homepage">https://ghostty.org/</url>
+  <url type="help">https://ghostty.org/docs/about</url>
+  <url type="bugtracker">https://github.com/ghostty-org/ghostty/issues</url>
+
+<!-- tbd
+  <screenshots>
+    <screenshot type="default">
+      <caption>Use background image attachments</caption>
+      <image>https://ghostty.org/tbd-screenshot.png</image>
+    </screenshot>
+  </screenshots>
+-->
+
+  <developer id="com.mitchellh">
+    <name>Mitchell Hashimoto</name>
+  </developer>
+
+  <releases>
+    <release version="v1.0.1+1" date="2025-01-09">
+      <description>
+        <p>
+          Initial AppImage build.
+        </p>
+      </description>
+    </release>
+  </releases>
+</component>

assets/ghostty.desktop

@@ -0,0 +1,22 @@
+[Desktop Entry]
+Name=Ghostty
+Type=Application
+Comment=A terminal emulator
+Exec=ghostty
+Icon=com.mitchellh.ghostty
+StartupWMClass=com.mitchellh.ghostty
+Categories=System;TerminalEmulator;Utility;
+Keywords=terminal;tty;pty;
+StartupNotify=true
+Terminal=false
+Actions=new-window;
+X-GNOME-UsesNotifications=true
+X-TerminalArgExec=-e
+X-TerminalArgTitle=--title=
+X-TerminalArgAppId=--class=
+X-TerminalArgDir=--working-directory=
+X-TerminalArgHold=--wait-after-command
+
+[Desktop Action new-window]
+Name=New Window
+Exec=ghostty

build.sh

@@ -3,11 +3,25 @@
 set -e
 
 export ARCH="$(uname -m)"
+
 GHOSTTY_VERSION="1.0.1"
+
+# Detect latest version numbers when jq is available.
+if command -v jq >/dev/null 2>&1; then
+	if [ "$1" = "latest" ]; then
+		GHOSTTY_VERSION="$(
+			curl -s https://api.github.com/repos/ghostty-org/ghostty/tags |
+				jq '[.[] | select(.name != "tip") | .name | ltrimstr("v")] | sort_by(split(".") | map(tonumber)) | last'
+		)"
+	fi
+fi
+
 TMP_DIR="/tmp/ghostty-build"
 APP_DIR="${TMP_DIR}/ghostty.AppDir"
 PUB_KEY="RWQlAjJC23149WL2sEpT/l0QKy7hMIFhYdQOFy0Z7z7PbneUgvlsnYcV"
-UPINFO="gh-releases-zsync|$(echo "$GITHUB_REPOSITORY" | tr '/' '|')|latest|*$ARCH.AppImage.zsync"
+UPINFO="gh-releases-zsync|$(echo "${GITHUB_REPOSITORY:-no-user/no-repo}" | tr '/' '|')|latest|*$ARCH.AppImage.zsync"
+APPDATA_FILE="${PWD}/assets/ghostty.appdata.xml"
+DESKTOP_FILE="${PWD}/assets/ghostty.desktop"
 
 rm -rf "${TMP_DIR}"
 
@@ -20,7 +34,7 @@ wget -q "https://release.files.ghostty.org/${GHOSTTY_VERSION}/ghostty-${GHOSTTY_
 
 minisign -V -m "ghostty-${GHOSTTY_VERSION}.tar.gz" -P "${PUB_KEY}" -s "ghostty-${GHOSTTY_VERSION}.tar.gz.minisig"
 
-rm ghostty-${GHOSTTY_VERSION}.tar.gz.minisig
+rm "ghostty-${GHOSTTY_VERSION}.tar.gz.minisig"
 
 tar -xzmf "ghostty-${GHOSTTY_VERSION}.tar.gz"
 
@@ -52,7 +66,7 @@ if ! mv ./usr/lib/ld-linux-x86-64.so.2 ./; then
 	cp -v /lib64/ld-linux-x86-64.so.2 ./
 fi
 
-# prep appimage
+# Prepare AppImage -- Configure launcher script, metainfo and desktop file with icon.
 cat <<'EOF' >./AppRun
 #!/usr/bin/env sh
 
@@ -66,33 +80,15 @@ EOF
 
 chmod +x AppRun
 
-ln -s usr/share/applications/com.mitchellh.ghostty.desktop .
-ln -s usr/share/icons/hicolor/256x256/apps/com.mitchellh.ghostty.png .
-
-sed -i 's/;TerminalEmulator;/;TerminalEmulator;Utility;/' com.mitchellh.ghostty.desktop
-
-cat <<'EOF' >./usr/share/metainfo/com.mitchellh.ghostty.appdata.xml
-<?xml version="1.0" encoding="UTF-8"?>
-<component type="desktop-application">
-  <content_rating type="oars-1.0" />
-  <description>
-    <p>
-      👻 Ghostty is a fast, feature-rich, and cross-platform terminal emulator that uses platform-native UI and GPU acceleration.
-    </p>
-  </description>
-  <developer id="com.mitchellh">
-    <name>Mitchell Hashimoto</name>
-  </developer>
-  <icon type="remote">https://raw.githubusercontent.com/ghostty-org/ghostty/refs/heads/main/images/icons/icon_256.png</icon>
-  <id>com.mitchellh.ghostty</id>
-  <launchable type="desktop-id">com.mitchellh.ghostty.desktop</launchable>
-  <metadata_license>MIT</metadata_license>
-  <name>Ghostty</name>
-  <project_license>MIT</project_license>
-  <summary>A terminal emulator</summary>
-  <url type="homepage">https://ghostty.org</url>
-</component>
-EOF
+cp "${APPDATA_FILE}" "usr/share/metainfo/com.mitchellh.ghostty.appdata.xml"
+
+# Fix Gnome dock issues -- StartupWMClass attribute needs to be present.
+cp "${DESKTOP_FILE}" "usr/share/applications/com.mitchellh.ghostty.desktop"
+# WezTerm has this, it might be useful.
+ln -s "com.mitchellh.ghostty.desktop" "usr/share/applications/ghostty.desktop"
+
+ln -s "usr/share/applications/com.mitchellh.ghostty.desktop" .
+ln -s "usr/share/icons/hicolor/256x256/apps/com.mitchellh.ghostty.png" .
 
 cd "${TMP_DIR}"
 

setup.sh

@@ -5,6 +5,22 @@ set -e
 export DEBIAN_FRONTEND="noninteractive"
 
 ZIG_VERSION="0.13.0"
+MINISIGN_URL="https://github.com/jedisct1/minisign/releases/download/0.11/minisign-0.11-linux.tar.gz"
+
+# Detect latest version numbers when jq is available.
+if command -v jq >/dev/null 2>&1; then
+	if [ "$1" = "latest" ]; then
+		ZIG_VERSION="$(
+			curl -s "https://ziglang.org/download/index.json" |
+				jq -r '[keys[] | select(. != "master" and contains("."))] | sort_by(split(".") | map(tonumber)) | last'
+		)"
+		MINISIGN_URL="$(
+			curl -s "https://api.github.com/repos/jedisct1/minisign/releases/latest" |
+				jq -r --arg prefix "minisign" --arg suffix "linux.tar.gz" \
+					'.assets[] | select(.name | startswith($prefix) and endswith($suffix)) | .browser_download_url'
+		)"
+	fi
+fi
 
 # update & install os base dependencies
 buildPkgs="build-essential libonig-dev libbz2-dev pandoc wget fuse libfuse2t64 file zsync appstream"
@@ -17,8 +33,8 @@ wget -q "https://github.com/AppImage/appimagetool/releases/download/continuous/a
 install appimagetool-x86_64.AppImage /usr/local/bin/appimagetool
 
 # minisign: https://github.com/jedisct1/minisign
-wget -q "https://github.com/jedisct1/minisign/releases/download/0.11/minisign-0.11-linux.tar.gz"
-tar -xzf minisign-0.11-linux.tar.gz
+wget -q "${MINISIGN_URL}" -O "minisign-linux.tar.gz"
+tar -xzf "minisign-linux.tar.gz"
 mv minisign-linux/x86_64/minisign /usr/local/bin
 
 # zig: https://ziglang.org
@@ -29,6 +45,6 @@ ln -s "/opt/zig-linux-x86_64-${ZIG_VERSION}/zig" /usr/local/bin/zig
 # cleanup
 rm -r \
 	"appimagetool-x86_64.AppImage" \
-	"minisign-0.11-linux.tar.gz" \
+	"minisign-linux.tar.gz" \
 	"minisign-linux" \
 	"zig-linux-x86_64-${ZIG_VERSION}.tar.xz"