gistfile1.txt

building mongodb seems to hang forever in patchPhase.  It has no prePatch hooks, no patches, and a postPatch
hook  as follows

  postPatch = ''
    # fix environment variable reading
    substituteInPlace SConstruct \
        --replace "env = Environment(" "env = Environment(ENV = os.environ,"
  '';

and it's that substituteInPlace call that takes forever


:; (cd /tmp && nix-shell '<nixpkgs>' -A mongodb --show-trace --pure)
[nix-shell:/private/tmp]$ cd mongodb-src-r3.0.4/
[nix-shell:/private/tmp/mongodb-src-r3.0.4]$ ls -l SConstruct
-rw-rw-r-- 1 dbarlow wheel 92233 Jun 15 16:43 SConstruct
[nix-shell:/private/tmp/mongodb-src-r3.0.4]$  for i in 10 50 100 200 300 400 500 600 700 800 900; do (head -$i SConstruct  > in); time substitute in out --replace "env = Environment(" "env = Environment(ENV = os.environ," ;done

real	0m0.009s
user	0m0.003s
sys	0m0.004s

real	0m0.008s
user	0m0.003s
sys	0m0.003s

real	0m0.007s
user	0m0.003s
sys	0m0.003s

real	0m0.010s
user	0m0.004s
sys	0m0.004s

real	0m0.011s
user	0m0.006s
sys	0m0.004s

real	0m0.012s
user	0m0.007s
sys	0m0.004s

real	0m0.014s
user	0m0.009s
sys	0m0.005s

real	0m0.016s
user	0m0.010s
sys	0m0.005s

real	1m20.850s
user	1m20.779s
sys	0m0.056s

real	1m58.572s
user	1m58.314s
sys	0m0.171s

real	2m34.061s
user	2m33.845s
sys	0m0.153s