#! /bin/sh

#! /usr/bin/env bash

tmpDir=${TMPDIR:-/tmp}/build-[% build.id +%]
declare -a args extraArgs
# Process the command line.
while [ $# -gt 0 ]; do
    arg="$1"
    shift
    if [ "$arg" = --help ]; then
        cat <<EOF
Usage: $0 [--dir PATH] [--run-env]

export NIX_PATH=

This script will reproduce Hydra build [% build.id %] of job [%
build.project.name %]:[% build.jobset.name %]:[% build.job.name +%]
(available at [%+ c.uri_for('/build' build.id) +%]).  It will fetch
all inputs of the Hydra build, then invoke Nix to build the job and
all its dependencies.
The inputs will be stored in $tmpDir.  This can be overriden using the
--dir flag.  After the build, the result of the build is available via
the symlink $tmpDir/result.
Flags:
  --dir PATH
    Override the location where the inputs and result symlink are stored.
  --run-env
    Fetch the inputs and build the dependencies, then start an
    interactive shell in which the environment is equal to that used
    to perform the build.  See the description of the --run-env flag
    in the nix-build(1) manpage for more details.
Any additional flags are passed to nix-build.  See the nix-build(1)
manpage for details.
EOF
        exit 0
    elif [ "$arg" = --dir ]; then
        tmpDir="$1"
        if [ -z "$tmpDir" ]; then
            echo "$0: --dir requires an argument" >&2
            exit 1
        fi
        shift
    else
        extraArgs+=("$arg")
    fi
done

srcDir=${TMPDIR:-/tmp}/build-[% build.id +%]
mkdir -p "$srcDir"/build
cd "$srcDir"/build
echo "storing sources in $srcDir" >&2

export NIX_PATH=

declare -a args

mkdir -p "$tmpDir"
cd "$tmpDir"
echo "storing sources in $tmpDir" >&2

inputDir="$srcDir/[% input.name %]/git-export"

inputDir="$tmpDir/[% input.name %]/git-export"

inputDir="$srcDir/[% input.name %]/hg-archive"

inputDir="$tmpDir/[% input.name %]/hg-archive"

inputDir="$srcDir/[% input.name %]/svn-export"

inputDir="$tmpDir/[% input.name %]/svn-export"

nix-build "$nixExprInputDir/[% build.nixexprpath %]" -A '[% build.job.name %]' "${args[@]}" "$@"

nix-build "$nixExprInputDir/[% build.nixexprpath %]" -A '[% build.job.name %]' "${args[@]}" "${extraArgs[@]}"