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fix: cap zellij session name length to avoid socket path overflow crash

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Noah Masur
2026-08-03 15:54:52 -04:00
parent 31cecf05cc
commit df38163999
2 changed files with 22 additions and 2 deletions
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docs/CHANGELOG.md
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@@ -1,5 +1,18 @@
# Changelog
## 2026-08-03
- Fixed the `zellij-session` fish function in `presets/programs/zellij.nix`
truncating the session name (derived from the target directory basename)
to 20 characters. Zellij names each session's Unix-domain IPC socket
`$TMPDIR/zellij-<uid>/<version>/<name>`, and on macOS the socket path is
capped at 103 bytes. The `/var/folders/...` `$TMPDIR` prefix consumes ~79
of those, leaving only ~24 chars for the name, so switching into directories
with long basenames overflowed the socket path. Because `switch-session`
had already detached from the current session by the time the new one failed
to bind, the failure took down the entire terminal instead of erroring
gracefully.
## 2026-07-25
- Added jjui config generation to `jujutsu.nix` in Home Manager to include custom GitHub ruleset bypass commands (`ctrl+b` and `ctrl+shift+b`).
platforms/home-manager/modules/nmasur/presets/programs/zellij.nix
+8 -1
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@@ -58,8 +58,15 @@ in
if test "$TARGET_DIR" = $(pwd)
return 1
end
# Zellij names each session's IPC socket $TMPDIR/zellij-<uid>/<ver>/<name>.
# On macOS the socket path is capped at 103 bytes; the $TMPDIR prefix under
# /var/folders/... eats ~79 of those, leaving only ~24 chars for the name.
# A longer basename overflows the socket path, and because switch-session has
# already detached from the current session by the time the new one fails to
# bind, it takes the whole terminal down. Truncate to stay well under the limit.
set SESSION_NAME (basename $TARGET_DIR | string sub --length 20)
echo "$ZELLIJ_SESSION_NAME" > ~/.local/state/zellij-last-session
${lib.getExe pkgs.zellij} action switch-session $(basename $TARGET_DIR) --cwd $TARGET_DIR --layout default
${lib.getExe pkgs.zellij} action switch-session $SESSION_NAME --cwd $TARGET_DIR --layout default
'';
};
gh-run = {