# Contributor: Jakub Jirutka <jakub@jirutka.cz>
# Maintainer: Jakub Jirutka <jakub@jirutka.cz>
pkgname=nix
pkgver=2.3.3
pkgrel=0
pkgdesc="The purely functional package manager"
url="https://nixos.org/nix/"
arch="x86 x86_64 aarch64"  # supported platforms
license="LGPL-2.1-or-later"
depends="ca-certificates"
depends_dev="boost-dev"
makedepends="
	$depends_dev
	bash
	brotli-dev
	bzip2-dev
	curl-dev
	gc-dev
	openssl-dev
	libseccomp-dev
	libsodium-dev
	sqlite-dev
	xz
	xz-dev
	editline-dev
	"
pkggroups="nix nixbld"
install="$pkgname.pre-install"
subpackages="$pkgname-dev $pkgname-openrc $pkgname-doc"
source="https://nixos.org/releases/nix/nix-$pkgver/nix-$pkgver.tar.xz
	nix-daemon.initd
	nix-profile.sh
	"

build() {
	# NOTE: /nix/var is recommended by upstream and we need /nix anyway.
	bash ./configure \
		--build=$CBUILD \
		--host=$CHOST \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--localstatedir=/nix/var \
		--enable-gc
	make
}

package() {
	make DESTDIR="$pkgdir" install

	cd "$pkgdir"

	# Remove trash.
	rm -R etc/init
	rm -R usr/lib/systemd
	rm etc/profile.d/*

	mkdir -p usr/sbin
	rm -f usr/bin/nix-daemon
	ln -s usr/bin/nix usr/sbin/nix-daemon

	install -m 755 -D "$srcdir"/nix-profile.sh etc/profile.d/nix.sh
	install -m 755 -D "$srcdir"/nix-daemon.initd etc/init.d/nix-daemon

	# Setup build users.
	# Note: max-jobs should equal number of created nixbld<n> users.
	install -d -m 0555 etc/nix
	cat > etc/nix/nix.conf <<-EOF
		build-users-group = nixbld
		max-jobs = 4
	EOF

	# This is based on https://github.com/NixOS/nix/blob/9617a04/scripts/install-multi-user.sh#L525
	# NOTE: store dir must be /nix/store, otherwise pre-built binaries from
	#   the standard Nixpkgs channels would not work.
	install -d -m 1775 -g nixbld \
		nix/store
	install -d -m 0755 \
		nix/var/log/nix/drvs \
		nix/var/nix/db \
		nix/var/nix/gcroots \
		nix/var/nix/manifests \
		nix/var/nix/profiles/default \
		nix/var/nix/temproots \
		nix/var/nix/userpool \
		nix/var/nix/profile/per-user/root
	install -d -m 1777 \
		nix/var/nix/profiles/per-user \
		nix/var/nix/gcroots/per-user
	# Allow only users in the nix group to perform Nix operations.
	install -d -m 0770 -g nix \
		nix/var/nix/daemon-socket
}

sha512sums="ea62621f6e9ea75a2d4bb7e8cd88ffaa7924dd90b562baf5a7fb7c31c9f2af4991c0d6701600ad72096e4a7eeced4a163579539cfd992a5558f5cba228b6f591  nix-2.3.3.tar.xz
9e4568db987fbae5097f7bb086e8ad51742c2d229703104fb7e6f240ffb0ca72e57dc305fb238bcee4ec8002d780007af60f241b1f32b6aa413dd579d9c59e75  nix-daemon.initd
0fb5b9ff2f593dca22251b342494ea0b61380d8f905d85855282d259c112aa2a918d9785aa08f847c693a939ebae9fbefcd4e417ad93283a142e066105cc87b5  nix-profile.sh"