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+[[!comment format=mdwn
+ username="ilovezfs"
+ avatar="http://cdn.libravatar.org/avatar/f2b3954cf2ed0a551de9a49d3b6a64d0"
+ subject="pipe: resource exhausted (Too many open files)"
+ date="2017-07-30T16:05:10Z"
+ content="""
+Hi Joey,
+
+Yes, I can work around that particular failure by tweaking constraints.
+
+In particular,
+--allow-newer=\"sandi:base\" --allow-newer=\"aws:time\"
+
+I also first need to \"cabal install Cabal<1.25\" because git-annex seems
+to have a compatibility problem with Cabal-2.0.0.2. The error with
+Cabal-2.0.0.2 is
+
+[[!format sh \"\"\"
+Building executable 'git-annex' for git-annex-6.20170520..
+
+Build/BuildVersion.hs:1:1: error:
+    File name does not match module name:
+    Saw: ‘Main’
+    Expected: ‘Build.BuildVersion’
+  |
+1 | {- Outputs the version of git-annex that was built, for use by
+  | ^
+cabal: Leaving directory '.'
+cabal: Error: some packages failed to install:
+git-annex-6.20170520-3mbb3kAWTlXI0EMervIo66 failed during the building phase.
+The exception was:
+ExitFailure 1
+\"\"\"]]
+
+But, once I've installed the lower version of Cabal, and tweaked the 
+constraints for sandi and for aws, git-annex does build successfully.
+
+However, at that point a more serious issue comes up when I run \"git 
+annex test\" and here is the full log:
+https://gist.github.com/ilovezfs/d430f589d87d7f7237591cd51b2b94cb
+
+Here is a snippet:
+[[!format sh \"\"\"
+From ../../.t/tmprepo53
+ * [new branch]      git-annex     -> r2/git-annex
+ * [new branch]      master        -> r2/master
+ * [new branch]      synced/master -> r2/synced/master
+conflictor/subfile
+conflictor.variant-cc12
+conflictor/subfile
+conflictor.variant-cc12
+OK (3.27s)
+    conflict resolution symlink bit:                      OK
+    conflict resolution (uncommitted local file):         FAIL (0.49s)
+      sync failed in r1
+    conflict resolution (removed file):                   FAIL
+      Exception: git: createProcess: runInteractiveProcess: pipe: resource exhausted (Too many open files)
+    conflict resolution (nonannexed file):                FAIL
+      Exception: git: createProcess: runInteractiveProcess: pipe: resource exhausted (Too many open files)
+    conflict resolution (nonannexed symlink):             FAIL (0.03s)
+      git annex init failed
+    conflict resolution (mixed locked and unlocked file): FAIL
+      Exception: git: createProcess: runInteractiveProcess: pipe: resource exhausted (Too many open files)
+    map:                                                  FAIL
+      Exception: git: createProcess: runInteractiveProcess: pipe: resource exhausted (Too many open files)
+\"\"\"]]
+"""]]