@kha The runtime folder includes what is needed to link a
standalone Lean program. It is still contains some unnecessary files.
We will be able to remove them after we release Lean4.
EACCES is already ignored when creating lock files. In this case we
assume that the file to be locked is part of the system-wide
installation. On NixOS however, the file system containing system
packages is mounted read-only, and open(2) returns EROFS.
@wizardbc found that this is needed while working on lean.js.
I think it's because of the use of O_CREAT in open system call.
Related issue: leanprover/lean.js#10
Remark: the lock are not being erased on Windows.
I tried different solutions based on MoveFileEx and DeleteFile.
None of them worked. The one based on MoveFileEx
MoveFileEx(m_fname.c_str(), NULL, MOVEFILE_DELAY_UNTIL_REBOOT);
seems to delete the file after REBOOT.
But, this is not very useful.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
