Move completions generation from goreleaser to Makefile

.goreleaser.yml

@@ -9,10 +9,7 @@ before:
   hooks:
     - go mod tidy
     - make manpages GH_VERSION={{.Version}}
-    - mkdir -p ./share/bash-completion/completions ./share/fish/vendor_completions.d ./share/zsh/site-functions
-    - sh -c "go run ./cmd/gh completion -s bash > ./share/bash-completion/completions/gh"
-    - sh -c "go run ./cmd/gh completion -s fish > ./share/fish/vendor_completions.d/gh.fish"
-    - sh -c "go run ./cmd/gh completion -s zsh > ./share/zsh/site-functions/_gh"
+    - make completions
 
 builds:
   - <<: &build_defaults

Makefile

@@ -27,6 +27,13 @@ clean: script/build
 manpages: script/build
 	@script/build $@
 
+.PHONY: completions
+completions:
+	mkdir -p ./share/bash-completion/completions ./share/fish/vendor_completions.d ./share/zsh/site-functions
+	go run ./cmd/gh completion -s bash > ./share/bash-completion/completions/gh
+	go run ./cmd/gh completion -s fish > ./share/fish/vendor_completions.d/gh.fish
+	go run ./cmd/gh completion -s zsh > ./share/zsh/site-functions/_gh
+
 # just a convenience task around `go test`
 .PHONY: test
 test:
@@ -60,15 +67,22 @@ endif
 DESTDIR :=
 prefix  := /usr/local
 bindir  := ${prefix}/bin
-mandir  := ${prefix}/share/man
+datadir := ${prefix}/share
+mandir  := ${datadir}/man
 
 .PHONY: install
-install: bin/gh manpages
+install: bin/gh manpages completions
 	install -d ${DESTDIR}${bindir}
 	install -m755 bin/gh ${DESTDIR}${bindir}/
 	install -d ${DESTDIR}${mandir}/man1
 	install -m644 ./share/man/man1/* ${DESTDIR}${mandir}/man1/
+	install -DT -m644 ./share/bash-completion/completions/gh ${DESTDIR}${datadir}/bash-completion/completions/gh
+	install -DT -m644 ./share/fish/vendor_completions.d/gh.fish ${DESTDIR}${datadir}/fish/vendor_completions.d/gh.fish
+	install -DT -m644 ./share/zsh/site-functions/_gh ${DESTDIR}${datadir}/zsh/site-functions/_gh
 
 .PHONY: uninstall
 uninstall:
 	rm -f ${DESTDIR}${bindir}/gh ${DESTDIR}${mandir}/man1/gh.1 ${DESTDIR}${mandir}/man1/gh-*.1
+	rm -f ${DESTDIR}${datadir}/bash-completion/completions/gh
+	rm -f ${DESTDIR}${datadir}/fish/vendor_completions.d/gh.fish
+	rm -f ${DESTDIR}${datadir}/zsh/site-functions/_gh