sys-apps/guix: new package, the GNU Purely Functional Package Manager

Internal data model and command UI is a lot like
one of sys-apps/nix.

Package description mechanism is a bit different
in both surface syntax (guile vs nix expression language)
and evaluation method (compiled versus lazy loaded configs)

guix (as well as nix) is a source-based package manager with
strong support for binary packages. It uses multiple tricks
to make package source dependencies robust:

- guix installs every package into it's own --prefix=.
  Example: /gnu/store/6np03bm99hg7gprcwmzpbpaj00cka8p8-icecat-45.5.1-gnu1
- guix builds packages with PATH (and similar) only including explicitly
  listed depends. This eliminates automagic dependency.
- guix tracks full environment where package was built.
  Once environment changes new package needs to be built.

That's how you install firef^Wicecat just for your current user:

    $ guix package --install icecat

Package-Manager: Portage-2.3.3, Repoman-2.3.1

6 files changed, 163 insertions, 0 deletions

diff --git a/sys-apps/guix/Manifest b/sys-apps/guix/Manifest
new file mode 100644
index 000000000000..1cef3614d9dd
--- /dev/null
+++ b/sys-apps/guix/Manifest
@@ -0,0 +1 @@
+DIST guix-0.12.0.tar.gz 15823786 SHA256 6201e21186a7098af256d97562662d95353b1047799b9b216e1dd6e7692dfec9 SHA512 d61cb289d3773977400fa3c49869f30a3feb5e0364368017b9b8eaadee814c5c31897be398d6ff142349337334eb51cb6d0354bee27c0365de69ce1a09e858d3 WHIRLPOOL 9515967a05a449f24da49e95340a60fb91cc471fcc532ce6cfaaea82c9161e3a65a1adc4d95e9997f019565243ca385845edc484981adfc5956112092687a0ec
diff --git a/sys-apps/guix/files/guix-0.12.0-AR.patch b/sys-apps/guix/files/guix-0.12.0-AR.patch
new file mode 100644
index 000000000000..c9c91c20734c
--- /dev/null
+++ b/sys-apps/guix/files/guix-0.12.0-AR.patch
@@ -0,0 +1,8 @@
+diff --git a/config-daemon.ac b/config-daemon.ac
+index 056c939..b04deed 100644
+--- a/config-daemon.ac
++++ b/config-daemon.ac
+@@ -7,2 +7,3 @@ dnl C++ environment.  This macro must be used unconditionnaly.
+ AC_PROG_CXX
++AM_PROG_AR
+ AC_LANG([C++])
diff --git a/sys-apps/guix/files/guix-0.12.0-no-json-crate.patch b/sys-apps/guix/files/guix-0.12.0-no-json-crate.patch
new file mode 100644
index 000000000000..57b4308a3a89
--- /dev/null
+++ b/sys-apps/guix/files/guix-0.12.0-no-json-crate.patch
@@ -0,0 +1,38 @@
+commit 6023041346c79f7ac4105bba2552a82019fae840
+Author: David Thompson <davet@gnu.org>
+Date:   Fri Dec 30 14:15:35 2016 -0500
+
+    import: crate: Do not build when guile-json is not available.
+    
+    * Makefile.am (MODULES): Add 'guix/import/crate.scm' and
+    'guix/scripts/import/crate.scm' only when HAVE_GUILE_JSON.
+
+diff --git a/Makefile.am b/Makefile.am
+index 15939af12..97629f26e 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -122,7 +122,6 @@ MODULES =					\
+   guix/import/snix.scm				\
+   guix/import/cabal.scm				\
+   guix/import/cran.scm				\
+-  guix/import/crate.scm				\
+   guix/import/hackage.scm			\
+   guix/import/elpa.scm   			\
+   guix/scripts.scm				\
+@@ -142,7 +141,6 @@ MODULES =					\
+   guix/scripts/lint.scm				\
+   guix/scripts/challenge.scm			\
+   guix/scripts/import/cran.scm			\
+-  guix/scripts/import/crate.scm			\
+   guix/scripts/import/gnu.scm			\
+   guix/scripts/import/nix.scm			\
+   guix/scripts/import/hackage.scm		\
+@@ -162,6 +160,8 @@ if HAVE_GUILE_JSON
+ MODULES +=					\
+   guix/import/github.scm   			\
+   guix/import/json.scm				\
++  guix/import/crate.scm				\
++  guix/scripts/import/crate.scm			\
+   guix/import/pypi.scm				\
+   guix/scripts/import/pypi.scm			\
+   guix/import/cpan.scm				\
diff --git a/sys-apps/guix/files/guix-daemon.initd b/sys-apps/guix/files/guix-daemon.initd
new file mode 100644
index 000000000000..c4f25796c1ab
--- /dev/null
+++ b/sys-apps/guix/files/guix-daemon.initd
@@ -0,0 +1,16 @@
+#!/sbin/openrc-run
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+start() {
+	ebegin "Starting ${SVCNAME}"
+	start-stop-daemon --start --quiet --background --exec /usr/bin/guix-daemon -- --build-users-group=guixbuild
+	eend ${?}
+}
+
+stop() {
+	ebegin "Stopping ${SVCNAME}"
+	start-stop-daemon --stop --quiet --exec /usr/bin/guix-daemon
+	eend ${?}
+}
diff --git a/sys-apps/guix/guix-0.12.0-r1.ebuild b/sys-apps/guix/guix-0.12.0-r1.ebuild
new file mode 100644
index 000000000000..104b21d98f37
--- /dev/null
+++ b/sys-apps/guix/guix-0.12.0-r1.ebuild
@@ -0,0 +1,92 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+
+inherit autotools readme.gentoo-r1 user
+
+DESCRIPTION="GNU package manager (nix sibling)"
+HOMEPAGE="https://www.gnu.org/software/guix/"
+
+SRC_URI="mirror://gnu-alpha/${PN}/${P}.tar.gz"
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+RESTRICT=test # complains about size of config.log and refuses to start tests
+
+RDEPEND="
+	dev-libs/libgcrypt:0=
+	>=dev-scheme/guile-2
+	sys-libs/zlib
+	app-arch/bzip2
+	dev-db/sqlite
+"
+
+DEPEND="${RDEPEND}
+"
+
+QA_PREBUILT="usr/share/guile/site/2.0/gnu/packages/bootstrap/*"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-no-json-crate.patch
+	"${FILESDIR}"/${P}-AR.patch
+)
+
+DISABLE_AUTOFORMATTING=yes
+DOC_CONTENTS="Quick start user guide on Gentoo:
+
+[as root] allow binary substitution to be downloaded (optional)
+	# guix archive --authorize < /usr/share/guix/hydra.gnu.org.pub
+[as root] enable guix-daemon service:
+	[systemd] # systemctl enable guix-daemon
+	[openrc]  # rc-update add guix-daemon
+[as an user] ln -sf /var/guix/profiles/per-user/\$USER/guix-profile \$HOME/.guix-profile
+[as an user] install guix packages:
+	\$ guix package -i hello
+[as an user] configure environment:
+	Somewhere in .bash_profile you might want to set
+	export GUIX_LOCPATH=\$HOME/.guix-profile/lib/locale
+
+Next steps:
+	guix package manager user manual: https://www.gnu.org/software/guix/manual/guix.html
+"
+
+pkg_setup() {
+	enewgroup guixbuild
+	for i in {1..10}; do
+		# we list 'guixbuild' twice to
+		# both assign a primary group for user
+		# and add an user to /etc/group
+		enewuser guixbuilder${i} -1 -1 /var/empty guixbuild,guixbuild
+	done
+}
+
+src_prepare() {
+	default
+
+	eautoreconf
+}
+
+src_install() {
+	# TODO: emacs highlighter
+	default
+
+	readme.gentoo_create_doc
+
+	# TODO: will need a tweak for prefix
+	keepdir                /gnu/store
+	fowners root:guixbuild /gnu/store
+	fperms 1775            /gnu/store
+
+	keepdir                /var/guix/profiles/per-user
+	fperms 1777            /var/guix/profiles/per-user
+
+	newinitd "${FILESDIR}"/guix-daemon.initd guix-daemon
+}
+
+pkg_postinst() {
+	readme.gentoo_print_elog
+}
diff --git a/sys-apps/guix/metadata.xml b/sys-apps/guix/metadata.xml
new file mode 100644
index 000000000000..b7878815d80d
--- /dev/null
+++ b/sys-apps/guix/metadata.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>haskell@gentoo.org</email>
+		<name>Gentoo Haskell</name>
+	</maintainer>
+</pkgmetadata>