starship: update to 0.42.0, add completions.

- Completions are generated similar to the ones for rustup.

srcpkgs/starship/template

@@ -1,6 +1,6 @@
 # Template file for 'starship'
 pkgname=starship
-version=0.41.3
+version=0.42.0
 revision=1
 build_style=cargo
 build_helper="rust"
@@ -11,8 +11,25 @@ maintainer="Aluísio Augusto Silva Gonçalves <aluisio@aasg.name>"
 license="ISC"
 homepage="https://starship.rs"
 distfiles="https://github.com/starship/starship/archive/v${version}.tar.gz"
-checksum=ce2c86e3f3a7d8cd2e1a204e7ef491473fdd93c41bb43a4718fdd66039f7bc99
+checksum=cf7b5848949bc1e61dc771ef2a429e4ccb8d339e1ca705bdf521fc4a4fc96309
+
+if [ "$CROSS_BUILD" ]; then
+	hostmakedepends+=" starship"
+fi
 
 post_install() {
+	STARSHIP="target/${RUST_TARGET}/release/starship"
+	if [ "$CROSS_BUILD" ]; then
+		STARSHIP=starship
+	fi
+	# generate shell completions
+	${STARSHIP} completions zsh > starship.zsh
+	${STARSHIP} completions bash > starship.bash
+	${STARSHIP} completions fish > starship.fish
+
+	vinstall starship.zsh 0644 usr/share/zsh/site-functions/ _starship
+	vinstall starship.bash 0644 usr/share/bash-completion/completions/ starship
+	vinstall starship.fish 0644 usr/share/fish/vendor_completions.d/
+
 	vlicense LICENSE
 }