}
sub reproduce : Chained('build') PathPart('reproduce') Args(0) {
    my ($self, $c) = @_;
    $c->response->content_type('text/x-shellscript');
    $c->response->header('Content-Disposition', 'attachment; filename="reproduce-build-' . $c->stash->{build}->id . '.sh"');
    $c->stash->{template} = 'reproduce.tt';

    [% IF build.nixexprinput %]
      <a class="btn btn-info pull-right clearfix"
         href="[%c.uri_for('/build' build.id 'reproduce')%]">
        Reproduce this build locally
      </a>
    [% END %]

#! /bin/sh
# This script has been generated automatically by Hydra from the build
# at [% c.uri_for('/build' build.id) %].
set -e
export NIX_PATH=
srcDir=${TMPDIR:-/tmp}/build-[% build.id +%]
mkdir -p "$srcDir"/build
cd "$srcDir"/build
echo "storing sources in $srcDir" >&2
declare -a args
# Fetch the inputs.
[%+ FOREACH input IN build.inputs %]
inputDir=
[%+ IF input.type == "git" %]
inputDir="$srcDir/[% input.name %]/git-export"
if ! [ -d "$inputDir" ]; then
    echo "fetching Git input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..." >&2
    inputDirTmp="$inputDir.tmp"
    rm -rf "$inputDirTmp"
    mkdir -p "$inputDirTmp"
    git clone '[% input.uri %]' "$inputDirTmp"
    (cd "$inputDirTmp" && git checkout '[% input.revision %]')
    revCount="$(cd "$inputDirTmp" && (git rev-list '[% input.revision %]' | wc -l))"
    rm -rf "$inputDirTmp/.git"
    mv "$inputDirTmp" "$inputDir"
fi
args+=(--arg '[% input.name %]' "{ outPath = $inputDir; rev = \"[% input.revision %]\"; shortRev = \"[% input.revision.substr(0, 7) %]\"; revCount = \"$revCount\"; }")
[%+ ELSIF input.type == "hg" %]
inputDir="$srcDir/[% input.name %]/hg-archive"
if ! [ -d "$inputDir" ]; then
    echo "fetching Mercurial input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..." >&2
    inputDirTmp="$inputDir.tmp"
    rm -rf "$inputDirTmp"
    hg clone '[% input.uri %]' "$inputDirTmp" -r '[% input.revision %]'
    rm -rf "$inputDirTmp/.hg"
    mv "$inputDirTmp" "$inputDir"
fi
args+=(--arg '[% input.name %]' "{ outPath = $inputDir; rev = \"[% input.revision %]\"; revCount = \"$revCount\"; }")
[%+ ELSIF input.type == "svn" %]
inputDir="$srcDir/[% input.name %]/svn-export"
if ! [ -d "$inputDir" ]; then
    echo "fetching Subversion input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..." >&2
    rm -rf "$inputDir.tmp"
    svn export '[% input.uri %]@[% input.revision %]' "$inputDir.tmp"
    mv "$inputDir.tmp" "$inputDir"
fi
args+=(--arg '[% input.name %]' "{ outPath = $inputDir; rev = \"[% input.revision %]\"; }")
[% ELSIF input.type == "string" %]
args+=(--arg '[% input.name %]' '"[% input.value %]"')
[% ELSIF input.type == "boolean" %]
args+=(--arg '[% input.name %]' '[% input.value %]')
[% ELSE %]
echo "$0: input ‘[% input.name %]’ has unsupported type ‘[% input.type %]’" >&2
exit 1
[% END %]
[% IF input.name == build.nixexprinput +%]
nixExprInputDir="$inputDir"
[%+ END %]
if [ -n "$inputDir" ]; then
    NIX_PATH="$NIX_PATH${NIX_PATH:+:}[% input.name %]=$inputDir"
fi
[%+ END %]
# Run nix-build.
if [ -z "$nixExprInputDir" ]; then
    echo "$0: don't know the path to the Nix expression!" >&2
    exit 1
fi
#args+=(--option binary-caches '[% c.uri_for('/') %]')
# Since Hydra runs on x86_64-linux, pretend we're one.  This matters
# when evaluating jobs that rely on builtins.currentSystem.
args+=(--option system x86_64-linux)
echo "Nix path is $NIX_PATH" >&2
echo "Nix args are ${args[@]}" >&2
nix-build "$nixExprInputDir/[% build.nixexprpath %]" -A '[% build.job.name %]' "${args[@]}" "$@"