mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-27 17:33:09 +00:00
118 lines
3.0 KiB
Nix
118 lines
3.0 KiB
Nix
{
|
|
pkgs,
|
|
# arguments to `nix-build`, e.g. `"foo.nix -A bar"`
|
|
buildArgs,
|
|
# what path to open a browser at
|
|
open,
|
|
}: let
|
|
inherit (pkgs) lib;
|
|
|
|
error_page = pkgs.writeShellScriptBin "error_page" ''
|
|
echo "<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<style>
|
|
@media (prefers-color-scheme: dark) {
|
|
:root { filter: invert(100%); }
|
|
}
|
|
</style>
|
|
</head>
|
|
<body><pre>$1</pre></body>
|
|
</html>"
|
|
'';
|
|
|
|
# The following would have been simpler:
|
|
# 1. serve from `$serve`
|
|
# 2. pass each build a `--out-link $serve/result`
|
|
# But that way live-server does not seem to detect changes and therefore no
|
|
# auto-reloads occur.
|
|
# Instead, we copy the contents of each build to the `$serve` directory.
|
|
# Using rsync here, instead of `cp`, to get as close to an atomic
|
|
# directory copy operation as possible. `--delay-updates` should
|
|
# also go towards that.
|
|
build_and_copy = pkgs.writeShellScriptBin "build_and_copy" ''
|
|
set -euxo pipefail
|
|
|
|
set +e
|
|
stderr=$(2>&1 nix-build --out-link $out_link ${buildArgs})
|
|
exit_status=$?
|
|
set -e
|
|
|
|
if [ $exit_status -eq 0 ];
|
|
then
|
|
# setting permissions to be able to clean up
|
|
${lib.getBin pkgs.rsync}/bin/rsync \
|
|
--recursive \
|
|
--chmod=u=rwX \
|
|
--delete-before \
|
|
--delay-updates \
|
|
$out_link/ \
|
|
$serve/
|
|
else
|
|
set +x
|
|
${lib.getBin error_page}/bin/error_page "$stderr" > $error_page_absolute
|
|
set -x
|
|
|
|
${lib.getBin pkgs.findutils}/bin/find $serve \
|
|
-type f \
|
|
! -name $error_page_relative \
|
|
-delete
|
|
fi
|
|
'';
|
|
|
|
# https://watchexec.github.io/
|
|
watcher = pkgs.writeShellScriptBin "watcher" ''
|
|
set -euxo pipefail
|
|
|
|
${lib.getBin pkgs.watchexec}/bin/watchexec \
|
|
--shell=none \
|
|
--restart \
|
|
--print-events \
|
|
${lib.getBin build_and_copy}/bin/build_and_copy
|
|
'';
|
|
|
|
# A Rust alternative to live-server exists, but it was not in nixpkgs.
|
|
# `--no-css-inject`: without this it seems that only CSS is auto-reloaded.
|
|
# https://www.npmjs.com/package/live-server
|
|
server = pkgs.writeShellScriptBin "server" ''
|
|
set -euxo pipefail
|
|
|
|
${lib.getBin pkgs.nodePackages_latest.live-server}/bin/live-server \
|
|
--host=127.0.0.1 \
|
|
--verbose \
|
|
--no-css-inject \
|
|
--entry-file=$error_page_relative \
|
|
--open=${open} \
|
|
$serve
|
|
'';
|
|
|
|
devmode =
|
|
pkgs.writeShellScriptBin "devmode"
|
|
''
|
|
set -euxo pipefail
|
|
|
|
function handle_exit {
|
|
rm -rf "$tmpdir"
|
|
}
|
|
|
|
tmpdir=$(mktemp -d)
|
|
trap handle_exit EXIT
|
|
|
|
export out_link="$tmpdir/result"
|
|
export serve="$tmpdir/serve"
|
|
mkdir $serve
|
|
export error_page_relative=error.html
|
|
export error_page_absolute=$serve/$error_page_relative
|
|
${lib.getBin error_page}/bin/error_page "building …" > $error_page_absolute
|
|
|
|
${lib.getBin pkgs.parallel}/bin/parallel \
|
|
--will-cite \
|
|
--line-buffer \
|
|
--tagstr '{/}' \
|
|
::: \
|
|
"${lib.getBin watcher}/bin/watcher" \
|
|
"${lib.getBin server}/bin/server"
|
|
'';
|
|
in
|
|
devmode
|