github-cli: install shell completion

srcpkgs/github-cli/template

@@ -1,9 +1,10 @@
 # Template file for 'github-cli'
 pkgname=github-cli
 version=1.0.0
-revision=1
+revision=2
 wrksrc="cli-${version}"
 build_style=go
+build_helper=qemu
 go_import_path="github.com/cli/cli/cmd/gh"
 go_ldflags="-X github.com/cli/cli/command.Version=v${version}"
 short_desc="GitHub CLI tool"
@@ -22,6 +23,17 @@ pre_build() {
 	fi
 }
 
+post_build() {
+	gh=$(find $GOPATH/bin -name gh)
+	for shell in bash fish zsh; do
+		vtargetrun $gh completion -s $shell > github-cli.$shell
+	done
+}
+
 post_install() {
 	vlicense LICENSE
+
+	for shell in bash fish zsh; do
+		vcompletion github-cli.$shell $shell gh
+	done
 }