An earthly.sh shim script

Author: vector-of-bool

tools/earthly.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/bash
+
+. "$(dirname "${BASH_SOURCE[0]}")/use.sh" paths platform
+
+set -euo pipefail
+
+: "${EARTHLY_VERSION:=0.7.16}"
+
+# Calc the arch of the executable we want
+case "$ARCHNAME" in
+    x64)
+        arch=amd64
+        ;;
+    arm64)
+        arch=arm64
+        ;;
+    *)
+        echo "Unsupported architecture for automatic Earthly download: $HOSTTYPE" 1>&1
+        exit 99
+        ;;
+esac
+
+# The location where the Earthly executable will live
+cache_dir="$USER_CACHES_DIR/earthly-sh/$EARTHLY_VERSION"
+mkdir -p "$cache_dir"
+
+exe_filename="earthly-$OS_FAMILY-$arch$EXE_SUFFIX"
+EARTHLY_EXE="$cache_dir/$exe_filename"
+
+# Download if it isn't already present
+if ! is-file "$EARTHLY_EXE"; then
+    echo "Downloading $exe_filename $EARTHLY_VERSION"
+    url="https://github.com/earthly/earthly/releases/download/v$EARTHLY_VERSION/$exe_filename"
+    curl --retry 5 -LsS --max-time 120 --fail "$url" --output "$EARTHLY_EXE"
+    chmod a+x "$EARTHLY_EXE"
+fi
+
+run-earthly() {
+    "$EARTHLY_EXE" "$@"
+}
+
+if is-main; then
+    run-earthly "$@"
+fi