nix-on-droid/pkgs/nix-directory.nix

81 lines
2.6 KiB
Nix

# Copyright (c) 2019-2020, see AUTHORS. Licensed under MIT License, see LICENSE.
{ config, lib, stdenv, closureInfo, prootTermux, proot, qemuAarch64Static }:
let
buildRootDirectory = "root-directory";
prootCommand = lib.concatStringsSep " " [
"${proot}/bin/proot"
(
if config.build.arch == "aarch64"
then "-q ${qemuAarch64Static}/bin/qemu-aarch64-static"
else "-b /dev"
)
"-r ${buildRootDirectory}"
"-w /"
];
prootTermuxClosure = closureInfo {
rootPaths = [
prootTermux
];
};
in
stdenv.mkDerivation {
name = "nix-directory";
src = builtins.fetchurl {
url = "https://nixos.org/releases/nix/nix-2.3.1/nix-2.3.1-${config.build.arch}-linux.tar.xz";
sha256 =
let
archShas = {
aarch64 = "94a6a525bd0b2df82e14b96b5b0eaae86669b5d4671aacfc4db2db85325a81c1";
i686 = "a5d3f26d4a449616bf654286f2fe29c1c1df4f029b7e29fa3ccf8494d598bfee";
};
in
"${archShas.${config.build.arch}}";
};
PROOT_NO_SECCOMP = 1; # see https://github.com/proot-me/PRoot/issues/106
buildPhase = ''
mkdir --parents ${buildRootDirectory}/nix
cp --recursive store ${buildRootDirectory}/nix/store
CACERT=$(find ${buildRootDirectory}/nix/store -path '*-nss-cacert-*/ca-bundle.crt' | sed 's,^${buildRootDirectory},,')
PKG_BASH=$(find ${buildRootDirectory}/nix/store -path '*/bin/bash' | sed 's,^${buildRootDirectory},,')
PKG_BASH=''${PKG_BASH%/bin/bash}
PKG_COREUTILS=$(find ${buildRootDirectory}/nix/store -path '*/bin/env' | sed 's,^${buildRootDirectory},,')
PKG_COREUTILS=''${PKG_COREUTILS%/bin/env}
PKG_NIX=$(find ${buildRootDirectory}/nix/store -path '*/bin/nix' | sed 's,^${buildRootDirectory},,')
PKG_NIX=''${PKG_NIX%/bin/nix}
for i in $(< ${prootTermuxClosure}/store-paths); do
cp --archive "$i" "${buildRootDirectory}$i"
done
USER=${config.user.userName} ${prootCommand} "$PKG_NIX/bin/nix-store" --init
USER=${config.user.userName} ${prootCommand} "$PKG_NIX/bin/nix-store" --load-db < .reginfo
USER=${config.user.userName} ${prootCommand} "$PKG_NIX/bin/nix-store" --load-db < ${prootTermuxClosure}/registration
cat > package-info.nix <<EOF
{
bash = "$PKG_BASH";
cacert = "$CACERT";
coreutils = "$PKG_COREUTILS";
nix = "$PKG_NIX";
}
EOF
'';
installPhase = ''
mkdir $out
cp --recursive ${buildRootDirectory}/nix/store $out/store
cp --recursive ${buildRootDirectory}/nix/var $out/var
install -D -m 0644 package-info.nix $out/nix-support/package-info.nix
'';
fixupPhase = "true";
}