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mvoidex / hsdev

Haskell development tool
BSD 3-Clause "New" or "Revised" License
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incomplete response from `complete` #86

Closed bscottm closed 6 years ago

bscottm commented 6 years ago

I'm trying to diagnose a SH freeze that happens when invoking the complete command. However, the command line version is hosed:

% stack --stack-yaml=stack-ghc-8.2.2.yaml exec -- hsdev complete --file ~/play/emuwork/src-emubase/Machine/Types.hs
Missing:

Usage: hsdev complete [-w|--wide] (-f|--file path)
  show completions for input

Currently, complete will cause SH to freeze for 5 minutes (the default timeout for hsdev responses). Would like to figure out why. The JSON is similar to the command line:

HsDevClient.call[6] cmd 'complete' opts
{'command': 'complete',
 'file': '/Users/me/play/emuwork/src-emubase/Machine/Types.hs',
 'id': '6',
 'no-file': True,
 'prefix': '',
 'wide': False}

(BTW: I propagated the new and changed hsdev backend methods to the NoneBackend and the HaskellBackend classes. Really should consider running pylint after you hack on SH. You would be surprised at the number of people who actually use the "none" backend, which makes its functionality very important. As important as hsdev. :-)

bscottm commented 6 years ago

@mvoidex: Possible thread contention wtih SQLite?

bscottm commented 6 years ago

The problem manifests itself as a short read on the SH client -- SH sees an incomplete (short) response. Somewhat wondering if the socket needs to be forcibly flushed. I'll experiment and report back.

mvoidex commented 6 years ago

However, the command line version is hosed complete command expects prefix, but you can pass empty one:

hsdev complete "" --file <file>

Yes, it's slow. I'll try to figure out, what's wrong

bscottm commented 6 years ago

Actually, I'm coming to the conclusion that it's the network library that's broken (again) for the same reason related to your previous bug report on the GHC Trac. I'll try to confirm via wireshark to capture the incomplete hsdev socket write.

If I increase the hsdev/client.py read buffer size to 65536, there is no stall. But, if the size is 10240 (now), SH does multiple reads, the last of which is obviously incomplete. I also get a lot of messages from hsdev about kevent: invalid descriptor, which would also seem to point in the direction of the network runtime.

Here's a hsdev session that I just captured -- stalls in complete, but then dies in usages:

2018-04-19 10:19:09 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:09 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:09 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:10 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:10 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:10 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:10 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:10 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:10 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:10 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:10 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:10 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:10 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:10 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:10 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:10 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:10 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:10 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:10 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:10 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:10 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:10 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:11 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:11 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:11 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:11 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:11 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:11 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:11 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:11 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:11 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:11 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:11 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:11 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:11 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:11 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:11 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:11 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:11 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:11 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:11 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:11 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:11 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:12 -0700       TRACE sqlite:update/scan-project-file/update-project> update project: edas
2018-04-19 10:19:12 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:12 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:12 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:12 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:12 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:12 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:12 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:12 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:12 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:12 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:12 -0700       TRACE sqlite:update/scan-project-file/update-project> update project: emubase
2018-04-19 10:19:12 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:12 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:12 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:12 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:12 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:12 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:12 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:12 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:12 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:12 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:13 -0700       TRACE sqlite:update/scan-project-file/update-project> update project: emuwork
2018-04-19 10:19:13 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:13 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:13 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:13 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:13 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:13 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:13 -0700       TRACE :ghc> killing session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:13 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:13 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:13 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:13 -0700       TRACE sqlite:update/scan-project-file/update-project> update project: trs80
2018-04-19 10:19:13 -0700       TRACE :ghc> session: tmp global-db
2018-04-19 10:19:13 -0700       TRACE :ghc> setting flags: -no-user-package-db
2018-04-19 10:19:13 -0700       TRACE :ghc> invoking stack: /usr/local/bin/stack --compiler ghc-8.2.2 --arch x86_64 path
2018-04-19 10:19:13 -0700       TRACE :ghc> killing session: tmp global-db
2018-04-19 10:19:13 -0700       TRACE :ghc> session: tmp global-db/package-db /Users/bsm21317/.stack/snapshots/x86_64-osx/lts-11.5/8.2.2/pkgdb/package-db /Users/bsm21317/play/emuwork/.stack-work/install/x86_64-osx/lts-11.5/8.2.2/pkgdb
2018-04-19 10:19:13 -0700       TRACE :ghc> setting flags:
2018-04-19 10:19:13 -0700       TRACE :update/task/directory/task/package-db> package-db state: 25 modules
2018-04-19 10:19:13 -0700       TRACE :update/task/directory/task/package-db> nothing changes, all packages the same
2018-04-19 10:19:14 -0700       TRACE :update/task/directory/task/package-db> package-db state: 733 modules
2018-04-19 10:19:14 -0700       TRACE :update/task/directory/task/package-db> nothing changes, all packages the same
2018-04-19 10:19:14 -0700       TRACE :update/task/directory/task/package-db> package-db state: 1165 modules
2018-04-19 10:19:14 -0700       TRACE :update/task/directory/task/package-db> nothing changes, all packages the same
2018-04-19 10:19:14 -0700       DEBUG :update> updated 0 modules
2018-04-19 10:19:14 -0700       TRACE :127.0.0.1:60834/127.0.0.1:60834/req/3> responsed << {"result":[]}
2018-04-19 10:19:14 -0700       TRACE :127.0.0.1:60832> received >> {"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","no-file":true,"command":"complete","wide":false,"prefix":"","id":"4"}
2018-04-19 10:19:14 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/4> requested >> {"command":"complete","wide":false,"prefix":"","file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"}
2018-04-19 10:19:14 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/4> responsed << {"result":[{"id":{"name":"!","module":{"location":{"dirs":["/Users/bsm21317/.stack/snapshots/x86_64-...
2018-04-19 10:24:14 -0700       TRACE :127.0.0.1:60828> received >> {"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","no-file":true,"command":"complete","wide":false,"prefix":"","id":"5"}
2018-04-19 10:24:14 -0700       TRACE :127.0.0.1:60828/127.0.0.1:60828/req/5> requested >> {"command":"complete","wide":false,"prefix":"","file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"}
2018-04-19 10:24:14 -0700       TRACE :127.0.0.1:60828/127.0.0.1:60828/req/5> responsed << {"result":[{"id":{"name":"!","module":{"location":{"dirs":["/Users/bsm21317/.stack/snapshots/x86_64-...
2018-04-19 10:24:14 -0700       TRACE :127.0.0.1:60834> received >> {"query":{"input":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","type":"prefix"},"header":false,"command":"module","filters":[],"id":"6","no-file":true,"inspection":false}
2018-04-19 10:24:14 -0700       TRACE :127.0.0.1:60834/127.0.0.1:60834/req/6> requested >> {"command":"module","filters":[],"inspection":false,"header":false,"query":{"input":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","type":"prefix"}}
2018-04-19 10:24:14 -0700       TRACE :127.0.0.1:60834/127.0.0.1:60834/req/6> responsed << {"result":[]}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60832> received >> {"projects":[],"files":["/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"],"no-file":true,"command":"infer","id":"7"}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60832> received >> {"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","no-file":true,"command":"whoat","column":70,"id":"8","line":55}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/7> requested >> {"command":"infer","files":["/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"],"projects":[]}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/8> requested >> {"command":"whoat","line":55,"column":70,"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"}
2018-04-19 10:25:59 -0700       DEBUG :update> updated 0 modules
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/7> responsed << {"result":[]}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/8> responsed << {"result":[{"id":{"name":"Int","module":{"location":{"dirs":["/Users/bsm21317/.stack/programs/x86_64...
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60828> received >> {"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","no-file":true,"command":"usages","column":70,"id":"9","line":55}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60828/127.0.0.1:60828/req/9> requested >> {"command":"usages","line":55,"column":70,"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"}
2018-04-19 10:25:59 -0700       TRACE :127.0.0.1:60828/127.0.0.1:60828/req/9> responsed << {"result":[{"at":{"to":{"line":33,"column":25},"from":{"line":33,"column":22}},"symbol":{"id":{"name...
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60834> received >> {"projects":[],"files":["/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"],"no-file":true,"command":"infer","id":"10"}
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60832> received >> {"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","no-file":true,"command":"whoat","column":30,"id":"11","line":31}
2018-04-19 10:26:29 -0700       INFO  :127.0.0.1:60834> disconnected
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/11> requested >> {"command":"whoat","line":31,"column":30,"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"}
2018-04-19 10:26:29 -0700       TRACE :> stopping server
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60834/127.0.0.1:60834/req/10> requested >> {"command":"infer","files":["/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"],"projects":[]}
2018-04-19 10:26:29 -0700       ERROR :127.0.0.1:60834> exception: kevent: invalid argument (Bad file descriptor)
2018-04-19 10:26:29 -0700       TRACE :> accept thread stopped
2018-04-19 10:26:29 -0700       TRACE :> waiting for clients...
2018-04-19 10:26:29 -0700       TRACE :> waiting for 127.0.0.1:60828 to complete
2018-04-19 10:26:29 -0700       DEBUG :update> updated 0 modules
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60834/127.0.0.1:60834/req/10> responsed << {"result":[]}
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60832/127.0.0.1:60832/req/11> responsed << {"result":[{"pos":{"line":166,"column":6},"id":{"name":"DeviceManager","module":{"location":{"projec...
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60830> received >> {"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs","no-file":true,"command":"usages","column":30,"id":"12","line":31}
2018-04-19 10:26:29 -0700       INFO  :127.0.0.1:60830> disconnected
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60830/127.0.0.1:60830/req/12> requested >> {"command":"usages","line":31,"column":30,"file":"/Users/bsm21317/play/emuwork/src-emubase/Machine/Types.hs"}
2018-04-19 10:26:29 -0700       ERROR :127.0.0.1:60830> exception: kevent: invalid argument (Bad file descriptor)
2018-04-19 10:26:29 -0700       TRACE :127.0.0.1:60830/127.0.0.1:60830/req/12> responsed << {"result":[{"at":{"to":{"line":166,"column":19},"from":{"line":166,"column":6}},"symbol":{"pos":{"li...
2018-04-19 10:26:30 -0700       INFO  :127.0.0.1:60828> disconnected
2018-04-19 10:26:30 -0700       TRACE :> waiting for 127.0.0.1:60832 to complete
2018-04-19 10:26:30 -0700       FATAL   :127.0.0.1:60828> thread killed
2018-04-19 10:26:30 -0700       ERROR :127.0.0.1:60828> Scope leaves with exception: thread killed
CallStack (from HasCallStack):
  onError, called at src/System/Log/Simple/Monad.hs:104:36 in simple-log-0.9.3-D7FFRtyRsD8LeUQVCSVbtv:System.Log.Simple.Monad

2018-04-19 10:26:31 -0700       TRACE :> waiting for 127.0.0.1:60835 to complete
2018-04-19 10:26:31 -0700       INFO  :127.0.0.1:60832> disconnected
2018-04-19 10:26:31 -0700       FATAL   :127.0.0.1:60832> thread killed
2018-04-19 10:26:31 -0700       ERROR :127.0.0.1:60832> Scope leaves with exception: thread killed
CallStack (from HasCallStack):
  onError, called at src/System/Log/Simple/Monad.hs:104:36 in simple-log-0.9.3-D7FFRtyRsD8LeUQVCSVbtv:System.Log.Simple.Monad
bscottm commented 6 years ago

@mvoidex: I've captured a packet trace between SH and hsdev and confirmed that complete does send an incomplete response. I don't think the problem is hsdev itself because wireshark does show that hsdev stops sending data, with subsequent "invalid file descriptor messages" in stderr. That would lead me to conclude that the network-2.6.3.5 package is reaping socket/file descriptors before their time or that the sendAll function is misimplemented or something else funky is going on in encode.

Doesn't matter if hsdev is built with 8.0.2 or 8.2.2.

mvoidex commented 6 years ago

Is it fixed with #87?

bscottm commented 6 years ago

Unable to stall hsdev... so far.

mvoidex commented 6 years ago

Try to install from master with stack.yaml Or from ghc-8.4.2 with stack.yaml or nightly.yaml