add dev-lang/v preliminary ebuild

dev-lang/v/v-9999.ebuild

@@ -0,0 +1,63 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit toolchain-funcs
+
+# download once per week
+WEEK=$(printf "%(%Y-week-%W)T")
+
+DESCRIPTION="Simple, fast, safe, compiled. For developing maintainable software."
+HOMEPAGE="https://vlang.io"
+SRC_URI="
+	https://github.com/vlang/v/archive/master.tar.gz -> v-${WEEK}.tar.gz
+	https://github.com/vlang/vc/archive/master.tar.gz -> vc-${WEEK}.tar.gz
+"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~arm64"
+
+# FIXME v build-tools pulls a number of modules
+RESTRICT="network-sandbox"
+
+S="${WORKDIR}/v-master"
+
+src_compile() {
+	CC=$(tc-getCC)
+	
+	# bootstrap the compiler using its C translation and then rebuild from V
+	${CC} ${CFLAGS} -g -std=gnu11 -o v ${WORKDIR}/vc-master/v.c ${LDFLAGS} -lm -lpthread || die
+	./v -prod self || die
+	
+	# build tools
+	./v build-tools || die
+	
+	# tell V it is managed by a package manager
+	touch cmd/tools/.disable_autorecompilation
+}
+
+src_install() {
+	# compiler entry point
+	exeinto /usr/lib/vlang
+	doexe v
+	dosym /usr/lib/vlang/v /usr/bin/v
+	
+	# v subcommands
+	exeinto /usr/lib/vlang/cmd/tools
+	doexe cmd/tools/{check_os_api_parity,fast_job,map_fuzz,missdoc,oldv,performance_compare,repeat,test_if_v_test_system_works,test_os_process,vbin2v,vbuild-examples,vbuild-tools,vbuild-vbinaries,vcheck-md,vcomplete,vcreate,vfmt,vpm,vrepl,vself,vsetup-freetype,vsymlink,vtest,vtest-all,vtest-cleancode,vtest-fmt,vtest-parser,vtest-self,vtracev,vup,vwipe-cache}
+	
+	# standard library
+	insinto /usr/lib/vlang
+	doins -r vlib
+	
+	# docs
+	insinto /usr/lib/vlang/cmd/v
+	doins -r cmd/v/help
+	
+	insinto /usr/share/vlang
+	doins -r examples
+	dodoc -r doc
+	einstalldocs
+}