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{ config, lib, ... }:
with config.krebs.lib;
let
out = {
# TODO deprecate krebs.build.host
options.krebs.build.host = mkOption {
type = types.host;
};
# TODO make krebs.build.profile shell safe
options.krebs.build.profile = mkOption {
type = types.str;
default = "/nix/var/nix/profiles/system";
};
# TODO deprecate krebs.build.user
options.krebs.build.user = mkOption {
type = types.user;
};
options.krebs.build.source = mkOption {
type = with types; attrsOf (either str (submodule {
options = {
url = str;
rev = str;
};
}));
default = {};
};
options.krebs.build.populate = mkOption {
type = types.str;
default = let
target-user = maybeEnv "target_user" "root";
target-host = maybeEnv "target_host" config.krebs.build.host.name;
target-port = maybeEnv "target_port" "22";
target-path = maybeEnv "target_path" "/var/src";
out = ''
#! /bin/sh
set -eu
ssh=''${ssh-ssh}
verbose() {
printf '%s%s\n' "$PS5$(printf ' %q' "$@")" >&2
"$@"
}
{ printf 'PS5=%q%q\n' @ "$PS5"
echo ${shell.escape git-script}
} | verbose $ssh -p ${shell.escape target-port} \
${shell.escape "${target-user}@${target-host}"} -T
unset tmpdir
trap '
rm -f "$tmpdir"/*
rmdir "$tmpdir"
trap - EXIT INT QUIT
' EXIT INT QUIT
tmpdir=$(mktemp -dt stockholm.XXXXXXXX)
chmod 0755 "$tmpdir"
${concatStringsSep "\n" (mapAttrsToList (name: symlink: ''
verbose ln -s ${shell.escape symlink.target} \
"$tmpdir"/${shell.escape name}
'') source-by-method.symlink)}
verbose proot \
-b "$tmpdir":${shell.escape target-path} \
${concatStringsSep " \\\n " (mapAttrsToList (name: file:
"-b ${shell.escape "${file.path}:${target-path}/${name}"}"
) source-by-method.file)} \
rsync \
-f ${shell.escape "P /*"} \
${concatMapStringsSep " \\\n " (name:
"-f ${shell.escape "R /${name}"}"
) (attrNames source-by-method.file)} \
--delete \
-vFrlptD \
-e "$ssh -p ${shell.escape target-port}" \
${shell.escape target-path}/ \
${shell.escape "${target-user}@${target-host}:${target-path}"}
'';
git-script = ''
#! /bin/sh
set -efu
export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
verbose() {
printf '%s%s\n' "$PS5$(printf ' %q' "$@")" >&2
"$@"
}
fetch_git() {(
dst_dir=$1
src_url=$2
src_ref=$3
if ! test -e "$dst_dir"; then
git clone "$src_url" "$dst_dir"
fi
cd "$dst_dir"
if ! url=$(git config remote.origin.url); then
git remote add origin "$src_url"
elif test "$url" != "$src_url"; then
git remote set-url origin "$src_url"
fi
# TODO resolve src_ref to commit hash
hash=$src_ref
if ! test "$(git log --format=%H -1)" = "$hash"; then
git fetch origin
git checkout "$hash" -- "$dst_dir"
git checkout -f "$hash"
fi
git clean -dxf
)}
${concatStringsSep "\n" (mapAttrsToList (name: git: ''
verbose fetch_git ${concatMapStringsSep " " shell.escape [
"${target-path}/${name}"
git.url
git.rev
]}
'') source-by-method.git)}
'';
in out;
};
};
source-by-method = let
known-methods = ["git" "file" "symlink"];
in genAttrs known-methods (const {}) // recursiveUpdate source-by-scheme {
git = source-by-scheme.http or {} //
source-by-scheme.https or {};
};
source-by-scheme = foldl' (out: { k, v }: recursiveUpdate out {
${v.scheme}.${k} = v;
}) {} (mapAttrsToList (k: v: { inherit k v; }) normalized-source);
normalized-source = mapAttrs (name: let f = x: getAttr (typeOf x) {
path = f (toString x);
string = f {
url = if substring 0 1 x == "/" then "file://${x}" else x;
};
set = let scheme = head (splitString ":" x.url); in recursiveUpdate x {
inherit scheme;
} // {
symlink.target = removePrefix "symlink:" x.url;
file.path = # TODO file://host/...
assert hasPrefix "file:///" x.url;
removePrefix "file://" x.url;
}.${scheme} or {};
}; in f) config.krebs.build.source;
in out
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