This is a strange error, closest thing I can find is https://github.com/JuliaLang/julia/issues/10434. Could you test with the 0.4.0-rc2 version of Julia that's available on the downloads page?
On Friday, September 25, 2015 at 12:52:23 AM UTC-7, Ferran Mazzanti wrote: > > Hi folks, > I start to learn how painful thinks can get when you miss different things > from different packages... I feel somehow miserable. > I try to install Winston, which needs Cairo, etc... on my OSX Yosemite > box. When I issue > Pkg.add("Winston") for exemple I get the following: > > INFO: Installing Cairo v0.2.31 > ERROR: sendfile: operation not supported on socket (ENOTSUP) > in wait at > /Applications/Julia-0.3.11.app/Contents/Resources/julia/lib/julia/sys.dylib > (repeats 2 times) > in wait at task.jl:48 > in sync_end at > /Applications/Julia-0.3.11.app/Contents/Resources/julia/lib/julia/sys.dylib > in add at pkg/entry.jl:319 > in add at pkg/entry.jl:71 > in anonymous at pkg/dir.jl:28 > in cd at > /Applications/Julia-0.3.11.app/Contents/Resources/julia/lib/julia/sys.dylib > in __cd#229__ at > /Applications/Julia-0.3.11.app/Contents/Resources/julia/lib/julia/sys.dylib > in add at pkg.jl:20 > > and I can't for the sake of me understand what is going on. Is it a > problem of Yosemite? Julia?... > Anybody here can help me please? I used to have everything working, but > after an upgrade everything > stopped working. > > Any help appreciated. >