diff options
| -rw-r--r-- | src/libstore/build.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc index 77e968ddd..acc292305 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -1708,8 +1708,11 @@ void DerivationGoal::startBuilder() /* Hard-linking fails if we exceed the maximum link count on a file (e.g. 32000 of ext3), which is quite possible after a `nix-store - --optimise'. Make a copy instead. */ - if (errno != EMLINK) + --optimise'. It can also fail if another + process called makeImmutable() on *i after we + did makeMutable(). In those cases, make a copy + instead. */ + if (errno != EMLINK && errno != EPERM) throw SysError(format("linking `%1%' to `%2%'") % p % *i); StringSink sink; dumpPath(*i, sink); |