[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

"epollCreate: unsupported operation" on buildd hosts

Dear Devel list,

updating the GHC haskell compiler to the newest version in Debian is
causing surprisingly many problems. With one of those, I am totally at a
loss to understand it, especially as I cannot reproduce it.

Basically, the new GHC compiler uses the epoll system call where
available, which should be the case on all Linux kernels by now.
Building the compiler works fine (even though it is a two stage
process), but then using the compiler to build another package (which
might or might not be a new version of the compiler) fails with:
epollCreate: unsupported operation (Function not implemented)
e.g. in

On my machine and other developer’s machines, this is not reproducible.
Upstream is rightfully puzzled as well (“That's odd. Is it always
reproducible within a single machine? Linux (and Debian) should support
epoll just fine.”, http://hackage.haskell.org/trac/ghc/ticket/5005)

Does anyone here have a clue as to why the epoll system calls might fail
on buildd machines?


Joachim "nomeata" Breitner
Debian Developer
  nomeata@debian.org | ICQ# 74513189 | GPG-Keyid: 4743206C
  JID: nomeata@joachim-breitner.de | http://people.debian.org/~nomeata

Attachment: signature.asc
Description: This is a digitally signed message part

Reply to: