ghostty/build.zig.zon.nix
Mitchell Hashimoto d0e12cc082 update libxev to workaround the io_uring regression in Linux 6.15.4
Fixes #7724

Background at the end of the commit message. The fix in libxev is
described in the PR and commit we pin to here, but basically we swap
read for poll for eventfd/timerfd.

From Jens Axboe on X:

> This will fix it: https://pastebin.com/n7JSZWpW which makes me suspicious
> that it's an S_IFREG check somewhere else, as anon inodes are now listed as
> regular files. Has potentially pretty broad implications...

> I think I can already answer why that breaks things - io_uring checks if
> this is a regular file, and if it is, it doesn't do short reads. Short
> reads on regular files (or a bdev) will cause application issues, as
> basically nobody expects them.

> Now we have what acts like a char dev, but where io_uring will retry IO
> because the application asked for more data than what was delivered. This
> will cause the weird slowdowns as data isn't delivered as soon as it's
> available.
2025-06-29 15:11:24 -07:00

357 lines
13 KiB
Nix
Generated

# generated by zon2nix (https://github.com/jcollie/zon2nix)
{
lib,
linkFarm,
fetchurl,
fetchgit,
runCommandLocal,
zig_0_14,
name ? "zig-packages",
}: let
unpackZigArtifact = {
name,
artifact,
}:
runCommandLocal name
{
nativeBuildInputs = [zig_0_14];
}
''
hash="$(zig fetch --global-cache-dir "$TMPDIR" ${artifact})"
mv "$TMPDIR/p/$hash" "$out"
chmod 755 "$out"
'';
fetchZig = {
name,
url,
hash,
}: let
artifact = fetchurl {inherit url hash;};
in
unpackZigArtifact {inherit name artifact;};
fetchGitZig = {
name,
url,
hash,
}: let
parts = lib.splitString "#" url;
url_base = builtins.elemAt parts 0;
url_without_query = builtins.elemAt (lib.splitString "?" url_base) 0;
rev_base = builtins.elemAt parts 1;
rev =
if builtins.match "^[a-fA-F0-9]{40}$" rev_base != null
then rev_base
else "refs/heads/${rev_base}";
in
fetchgit {
inherit name rev hash;
url = url_without_query;
deepClone = false;
};
fetchZigArtifact = {
name,
url,
hash,
}: let
parts = lib.splitString "://" url;
proto = builtins.elemAt parts 0;
path = builtins.elemAt parts 1;
fetcher = {
"git+http" = fetchGitZig {
inherit name hash;
url = "http://${path}";
};
"git+https" = fetchGitZig {
inherit name hash;
url = "https://${path}";
};
http = fetchZig {
inherit name hash;
url = "http://${path}";
};
https = fetchZig {
inherit name hash;
url = "https://${path}";
};
};
in
fetcher.${proto};
in
linkFarm name [
{
name = "N-V-__8AALw2uwF_03u4JRkZwRLc3Y9hakkYV7NKRR9-RIZJ";
path = fetchZigArtifact {
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