So I did some further digging with good ol println in Scala :) When I’m in one of the "wrong" directories the build process spend most of its time in the function Mercurial.check_files . The problem seems to be that the paths in hg.known_files() are relative to the current working directory. So "hg.root + Path.explode(name)" returns an incorrect path. The filtering of files in the next lines then doesn’t work and it reruns check() for every file.
The build process works in the directory "~/tmp/tmp" because the paths in hg.known_files() start with "../../" and by luck "hg.root + Path.explode(name)" returns a correct path. The version of my mercurial installation is 4.6.1.  <https://isabelle.in.tum.de/repos/isabelle/file/1b9462304e1d/src/Pure/General/mercurial.scala#l156 <https://isabelle.in.tum.de/repos/isabelle/file/1b9462304e1d/src/Pure/General/mercurial.scala#l156>> Gruß Max > Am 28.06.2018 um 15:53 schrieb Makarius <makar...@sketis.net>: > > On 28/06/18 13:25, Max Haslbeck wrote: >> >> I have the following curious problem: isabelle build only seems to work when >> I’m in certain directories. >> 4. run 'cd /' >> 5. run '/Users/mhaslbeck/Projects/isabelle/bin/isabelle build -v Pure' >> Output: >> 6. The build process now freezes and doesn’t react to keyboard input, can be >> killed by 'pkill java' > >> OS: macOS High Sierra 10.13.4 >> Isabelle rev: f5ca4c2157a5 > > I have made some experiments with this Isabelle version and macOS > 10.13.5, but did not see any such problems. > > Maybe there is something odd with the local file-system setup > (encryption, "protections" by Apple etc.). It could be again some fight > of Oracle (Java) vs. Apple. > > >> Is there any way to get more verbose output from the building process? > > Pure is the initial bootstrap: you may get more information if you build > it from a different directory first, and then repeat the experiment with > "isabelle build -b FOL". > > An alternative experiment: use "isabelle scala" to build from the > running Isabelle/Scala process: > > import isabelle._ > > val options = Options.init() > > Build.build(options, new Console_Progress, sessions = List("Pure"), > verbose = true) > > > > Can you try if some older Isabelle version still works? > > You can use "hg up -r Isabelle2017" (or other tags or revs) and then > repeat "isabelle components -a && isabelle jedit -bf" + build invocations. > > If you have found a good situation, you can also use hg bisect to narrow > it down: > > hg bisect --reset #once > hg up -r f5ca4c2157a5 ; hg bisect --bad > > Then "hg bisect --bad" or "hg bisect --good" to record the changing > state of that point in history. > > > You can also check the particular versions where the underlying JDK > changes: hg grep --all jdk Admin/components/main > > > Makarius
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