78 lines
1.8 KiB
Bash
78 lines
1.8 KiB
Bash
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#!/bin/env bash
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function die() { echo "$*" >&2; exit 1; }
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function check_preconditions() {
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test -d /secrets || die "no /secrets directory"
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test -d /depot || die "no /depot directory"
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}
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function clone_depot() {
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echo Cloning depot to /depot/depot >&2
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hg clone ssh://hg/lukegb/depot /depot/depot
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cd /depot/depot
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}
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function update_depot() {
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echo Updating depot checkout in /depot/depot >&2
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cd /depot/depot
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hg revert -a
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hg pull
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hg update -r default -C
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hg purge --all
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hg strip --no-backup 'roots(outgoing())' || true
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}
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function make_depot_fresh() {
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if test -d /depot/depot; then
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update_depot
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else
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clone_depot
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fi
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}
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function clone_nixpkgs() {
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echo Cloning nixpkgs to /depot/nixpkgs >&2
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git clone --bare https://github.com/NixOS/nixpkgs.git /depot/nixpkgs
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}
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function update_nixpkgs() {
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echo Updating nixpkgs checkout in /depot/nixpkgs >&2
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pushd /depot/nixpkgs
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git fetch origin nixos-unstable
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git branch -f master FETCH_HEAD
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popd
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}
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function make_nixpkgs_fresh() {
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if test -d /depot/nixpkgs; then
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update_nixpkgs
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else
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clone_nixpkgs
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fi
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}
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function main() {
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set -euxo pipefail
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check_preconditions
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make_depot_fresh
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make_nixpkgs_fresh
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# Pre-seed the copybara cache directory, so it doesn't try to do the clone itself.
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mkdir -p $HOME/copybara/cache/{git_repos,hg_repos}
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hg clone --noupdate /depot/depot $HOME/copybara/cache/hg_repos/file%3A%2F%2F%2Fdepot%2Fdepot
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git clone --mirror /depot/nixpkgs $HOME/copybara/cache/git_repos/https%3A%2F%2Fgithub%2Ecom%2FNixOS%2Fnixpkgs%2Egit
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sed -i 's,file:///home/lukegb/depot,file:///depot/depot,g' ./third_party/nixpkgs/copy.bara.sky
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copybara migrate --verbose ./third_party/nixpkgs/copy.bara.sky || exit 0
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# Reset to a clean state.
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hg update -r default -C
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hg purge --all
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# And push, if it that worked.
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hg push -r .
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}
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main
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