install.sh: xbps-install (void linux) support (#317)

* install.sh: xbps-install (void linux) support

.github/workflows/test-install.yml

@@ -182,6 +182,24 @@ jobs:
             exit 1
           fi
 
+  void-linux:
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+    container: ghcr.io/void-linux/void-glibc:latest
+    steps:
+      - name: Test install
+        run: |-
+          set -e
+          (xbps-install -Syu || true) && xbps-install -yu xbps curl
+          /bin/sh -c "$(curl -fsSL https://sq.io/install.sh)"
+          if [ $(sq version | awk '{print $1}') != "sq" ]; then
+            # NOTE: The Void package release is a manual process.
+            # Thus, the released version will not match this particular
+            # workflow release. We'll just do a simple test here.
+            echo "FAIL: sq install not working for some reason"
+            exit 1
+          fi
+
   windows-scoop:
     runs-on: windows-latest
     if: startsWith(github.ref, 'refs/tags/v')

install.sh

@@ -15,15 +15,25 @@ get_distribution() {
 	echo "$lsb_dist"
 }
 
-# Usage:
+# Use command exists to test if a command is present on the system. E.g.
 #
-# if command_exists lsb_release; then
+#   if command_exists lsb_release; then
 command_exists() {
 	command -v "$@" > /dev/null 2>&1
 }
 
 get_distribution
 
+# Void Linux / xbps
+if command_exists xbps-install; then
+  set -e
+  printf "Using xbps-install to install sq...\n\n"
+
+  (xbps-install -Syu || true) && xbps-install -yu xbps
+  xbps-install -yu sq
+  exit
+fi
+
 # apt / deb
 if [ -r /etc/debian_version ] && command_exists apt; then
   set -e