build_style: Add gem build_style

Manual.md

@@ -781,6 +781,11 @@ with the character `r` in the `version` variable. The `distfiles`
 location will automatically be set as well as the package made to depend
 on `R`.
 
+- `gem` For packages that are installed using gems from [RubyGems](https://rubygems.org/).
+The gem command can be overridden by `gem_cmd`. `noarch` is set unconditionally and `distfiles`
+is set by the build style if the template does not do so. If your gem provides extensions which
+must be compiled consider using the `gemspec` build style instead.
+
 - `ruby-module` For packages that are ruby modules and are installable via `ruby install.rb`.
 Additional install arguments can be specified via `make_install_args`.
 

common/build-style/gem.sh

@@ -0,0 +1,60 @@
+#
+# This helper is for templates using gem files from RubyGems.
+#
+do_install() {
+	: ${gem_cmd:=gem}
+
+	local _GEMDIR _INSTDIR
+	
+	_GEMDIR=$($gem_cmd env gemdir)
+	_INSTDIR=${DESTDIR}/${_GEMDIR}/gems/${pkgname#ruby-}-${version}
+
+	$gem_cmd install \
+		--local \
+		--install-dir ${DESTDIR}/${_GEMDIR} \
+		--bindir ${DESTDIR}/usr/bin \
+		--ignore-dependencies \
+		--no-document \
+		--verbose \
+		${XBPS_SRCDISTDIR}/${pkgname}-${version}/${pkgname#ruby-}-${version}.gem
+
+	# Remove cache
+	rm -rf ${DESTDIR}/${_GEMDIR}/cache
+
+	# Remove ext directory. they are only source code and configuration
+	# The actual extensions are guarded in an arch path
+	rm -rf ${_INSTDIR}/ext
+
+	# Remove installed tests and benchmarks
+	rm -rf ${_INSTDIR}/{test,tests,autotest,benchmark,benchmarks,script,examples,demo}
+
+	# Remove files shipped on the root of the gem, most of the time they are useless
+	find ${_INSTDIR} -maxdepth 1 -type f -delete
+
+	# Remove unnecessary files
+	find ${DESTDIR}/${_GEMDIR}/extensions \( -name mkmf.log -o -name gem_make.out \) -delete
+
+	# Place manpages in usr/share/man/man[0-9]
+	find ${_INSTDIR}/man -type f -name '*.[0-8n]' | while read -r m; do
+		vman ${m}
+	done
+
+	rm -rf "${_INSTDIR}/man"
+
+	# Place executables in /usr/bin
+	if [ -d "${_INSTDIR}/bin" ]; then
+		for f in "${_INSTDIR}"/bin/*; do
+			vbin "${f}"
+		done
+	fi
+
+	rm -rf ${_INSTDIR}/bin
+
+	# Place conf files in their places
+	find ${_INSTDIR}/etc -type f | while read -r c; do
+		vmkdir $(dirname ${c##*${_INSTDIR}})
+		mv ${c} "${DESTDIR}/${c##*${_INSTDIR}}"
+	done
+
+	rm -rf ${_INSTDIR}/etc
+}

common/environment/build-style/gem.sh

@@ -0,0 +1,9 @@
+lib32disabled=yes
+hostmakedepends+=" ruby"
+depends+=" ruby"
+noarch=yes
+
+# default to rubygems
+if [ -z "$distfiles" ]; then
+	distfiles="https://rubygems.org/downloads/${pkgname#ruby-}-${version}.gem"
+fi