starship: update to 0.42.0, add completions.

- Completions are generated like 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 +11,20 @@ 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
 
 post_install() {
+	if ! [ "$CROSS_BUILD" ]; then
+		# generate shell completions
+		ln -s target/${RUST_TARGET}/release/starship starship
+		./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/
+	fi
+
 	vlicense LICENSE
 }