Stack IDE nearly starts on Windows

[lukexi]

Howdy! I'm trying out the rad new ide-backend Windows support. I've gotten stack-ide to build now after updating the ide-backend submodule to the latest (awesome!!) but it fails currently with this error:

$ stack ide start
{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.1156 @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseFatalError","contents":"user error ('C:\\msys64\\usr\\local\\ghc\\bin\\ghc-pkg.exe' exited with an error:\nghc-pkg.exe: C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\pkgdb\\:C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\pkgdb\\: getDirectoryContents: invalid argument (The filename, directory name, or volume label syntax is incorrect.)\n)"}
Process exited with ExitFailure 1: C:\Users\lukex_000\AppData\Roaming\local\bin\stack-ide.exe --verbose --include=C:\msys64\home\lukex_000\Projects\linear-extra\:C:\msys64\home\lukex_000\Projects\linear-extra\src\:C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\:C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\:C:\msys64\home\lukex_000\Projects\linear-extra\:C:\msys64\home\lukex_000\Projects\linear-extra\test\:C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\:C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --local-work-dir=C:\msys64\home\lukex_000\Projects\linear-extra\ --ide-backend-tools-path=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\install\x86_64-windows\lts-3.7\7.10.2\bin\:C:\Users\lukex_000\AppData\Roaming\stack\snapshots\x86_64-windows\lts-3.7\7.10.2\bin\:C:\msys64\usr\local\ghc\mingw\bin;C:\msys64\usr\local\ghc\mingw\lib;C:\msys64\mingw64\bin;C:\msys64\usr\local\bin;C:\msys64\usr\bin;C:\msys64\usr\bin;C:\Program Files\cmder_mini\vendor\conemu-maximus5;C:\Program Files\cmder_mini\vendor\conemu-maximus5\ConEmu;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client;C:\Program Files\Intel\iCLS Client;C:\Program Files\Broadcom\Broadcom 802.11 Network Adapter;C:\Program Files (x86)\Python27;C:\Program Files (x86)\Python27\Scripts;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\WIDCOMM\Bluetooth Software;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Microsoft SQL Server\110\Tools\Binn;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit;C:\msys64\usr\local\ghc\bin;C:\Users\lukex_000\AppData\Roaming\local\bin;C:\Users\lukex_000\AppData\Roaming\cabal\bin;C:\Program Files\Sublime Text 3;C:\msys64\usr\bin\site_perl;C:\msys64\usr\bin\vendor_perl;C:\msys64\usr\bin\core_perl --dist-dir=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\ --ghc-option=-hide-all-packages --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\src\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-stubdir=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-package=base --ghc-option=-package=binary-0.7.5.0 --ghc-option=-package=lens-4.12.3 --ghc-option=-package=linear-1.19.1.3 --ghc-option=-rtsopts --ghc-option=-with-rtsopts=-N --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\test\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-stubdir=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-package=base --package-db=C:\Users\lukex_000\AppData\Roaming\stack\snapshots\x86_64-windows\lts-3.7\7.10.2\pkgdb\:C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\install\x86_64-windows\lts-3.7\7.10.2\pkgdb\

What's the proper way to pass multiple package databases to ghc-pkg's --package-db argument on Windows?

I get the same thing with a quoted semicolon:

ghc-pkg list --package-db="C:/Users/lukex_000/AppData/Roaming/stack/snapshots/x86_64-windows/lts-3.7/7.10.2/pkgdb/;C:/msys64/home/lukex_000/Projects/linear-extra/.stack-work/install/x86_64-windows/lts-3.7/7.10.2/pkgdb/"
ghc-pkg.exe: C:/Users/lukex_000/AppData/Roaming/stack/snapshots/x86_64-windows/lts-3.7/7.10.2/pkgdb/;C:/msys64/home/lukex_000/Projects/linear-extra/.stack-work/install/x86_64-windows/lts-3.7/7.10.2/pkgdb/: getDirectoryContents: invalid argument (The filename, directory name, or volume label syntax is incorrect.)

I'll be super pumped to get this working as I've been nearly entirely diverted to Windows dev recently and have been thus without my beloved stack-ide-sublime : )

[lukexi]

Aha, the hardcoded ":"s are pretty clear here : )
https://github.com/commercialhaskell/stack/blob/master/src/Stack/Ide.hs

(still not sure why ;s aren't working with ghc-pkg though... it works with passing --package-db multiple times as a last resort)

[lukexi]

OK, a little further with this patch
lukexi/stack@604a61b

I now get this error.

lukex_000@Marble MINGW64 ~/Projects/linear-extra
$ stack ide start
Usage: stack-ide.exe [--ghc-option OPT] [--include PATH] [--rts-option OPT]
                     [--dist-dir DIR] [--dir DIR] [--local-work-dir DIR]
                     [--ide-backend-tools-path PATH] [--extra-path PATH]
                     [--package-db DIR] [--keep-tmp-files] [-v|--verbose]
                     [--version]
  Start a new session
Process exited with ExitFailure 1: C:\Users\lukex_000\AppData\Roaming\local\bin\stack-ide.exe --verbose --include=C:\msys64\home\lukex_000\Projects\linear-extra\;C:\msys64\home\lukex_000\Projects\linear-extra\src\;C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\;C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\;C:\msys64\home\lukex_000\Projects\linear-extra\;C:\msys64\home\lukex_000\Projects\linear-extra\test\;C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\;C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --local-work-dir=C:\msys64\home\lukex_000\Projects\linear-extra\ --ide-backend-tools-path=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\install\x86_64-windows\lts-3.7\7.10.2\bin\;C:\Users\lukex_000\AppData\Roaming\stack\snapshots\x86_64-windows\lts-3.7\7.10.2\bin\;C:\msys64\usr\local\ghc\mingw\bin;C:\msys64\usr\local\ghc\mingw\lib;C:\msys64\mingw64\bin;C:\msys64\usr\local\bin;C:\msys64\usr\bin;C:\msys64\usr\bin;C:\Program Files\cmder_mini\vendor\conemu-maximus5;C:\Program Files\cmder_mini\vendor\conemu-maximus5\ConEmu;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client;C:\Program Files\Intel\iCLS Client;C:\Program Files\Broadcom\Broadcom 802.11 Network Adapter;C:\Program Files (x86)\Python27;C:\Program Files (x86)\Python27\Scripts;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\WIDCOMM\Bluetooth Software;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Microsoft SQL Server\110\Tools\Binn;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit;C:\msys64\usr\local\ghc\bin;C:\Users\lukex_000\AppData\Roaming\local\bin;C:\Users\lukex_000\AppData\Roaming\cabal\bin;C:\Program Files\Sublime Text 3;C:\msys64\usr\bin\site_perl;C:\msys64\usr\bin\vendor_perl;C:\msys64\usr\bin\core_perl --dist-dir=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\ --ghc-option=-hide-all-packages --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\src\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-stubdir=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-optP-include --ghc-option=-optPC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\cabal_macros.h --ghc-option=-package=base --ghc-option=-package=binary-0.7.5.0 --ghc-option=-package=lens-4.12.3 --ghc-option=-package=linear-1.19.1.3 --ghc-option=-rtsopts --ghc-option=-with-rtsopts=-N --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\test\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\ --ghc-option=-iC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-stubdir=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\ --ghc-option=-optP-include --ghc-option=-optPC:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\cabal_macros.h --ghc-option=-package=base --package-db=C:\Users\lukex_000\AppData\Roaming\stack\snapshots\x86_64-windows\lts-3.7\7.10.2\pkgdb\ --package-db=C:\msys64\home\lukex_000\Projects\linear-extra\.stack-work\install\x86_64-windows\lts-3.7\7.10.2\pkgdb\

Not quite sure what to make of that yet; the arguments all look fine.

[lukexi]

Aha, ide-backend only expects one --package-db argument and it turns out things work just fine using the platform searchpath separator for the --package-db argument after all.
This is the new patch lukexi/stack@09e5049

I can start up stack-ide now!

It seems to hang here:

lukex_000@Marble MINGW64 ~/Projects/linear-extra
$ stack ide start
{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.4464 @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\msys64\\usr\\local\\ghc\\mingw\\bin:C:\\msys64\\usr\\local\\ghc\\mingw\\lib:C:\\msys64\\mingw64\\bin:C:\\msys64\\usr\\local\\bin:C:\\msys64\\usr\\bin:C:\\msys64\\usr\\bin:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5\\ConEmu:C:\\ProgramData\\Oracle\\Java\\javapath:C:\\Program Files (x86)\\Intel\\iCLS Client:C:\\Program Files\\Intel\\iCLS Client:C:\\Program Files\\Broadcom\\Broadcom 802.11 Network Adapter:C:\\Program Files (x86)\\Python27:C:\\Program Files (x86)\\Python27\\Scripts:C:\\Windows\\system32:C:\\Windows:C:\\Windows\\System32\\Wbem:C:\\Windows\\System32\\WindowsPowerShell\\v1.0:C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common:C:\\Program Files\\WIDCOMM\\Bluetooth Software:C:\\Program Files\\WIDCOMM\\Bluetooth Software\\syswow64:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn:C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit:C:\\msys64\\usr\\local\\ghc\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\cabal\\bin:C:\\Program Files\\Sublime Text 3:C:\\msys64\\usr\\bin\\site_perl:C:\\msys64\\usr\\bin\\vendor_perl:C:\\msys64\\usr\\bin\\core_perl @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}

[lukexi]

@dpratt71 thanks for the report in ide-backend — I forgot to post a followup here that if I send a message like RequestGetSourceErrors I get the same getDirectoryContents: invalid argument error. I will take a look at this later today and see if I can figure out what's going on. How did you run the trace?

[ncreep]

@lukexi, I made a small fix to the Windows build of ide-backend, see the pull request here. Now, when using your patched version of stack, stack ide start doesn't hang but fails one step further down the line. Like so:

{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = D:\\linear-extra\\session.4796 @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = D:\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = D:\\linear-extra\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: D:\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\Daniel\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\Daniel\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}
{"tag":"ResponseFatalError","contents":"<stdin>: hGetBufSome: resource exhausted (Not enough space)"}

Process exited with ExitFailure 1: C:\Users\Daniel\AppData\Roaming\local\bin\stack-ide.exe 
--verbose 
--include=D:\linear-extra\;D:\linear-extra\src\;D:\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\;D:\linear-extra\.stack-work\dist\d96ab9d9\build\;D:\linear-extra\;D:\linear-extra\test\;D:\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\;D:\linear-extra\.stack-work\dist\d96ab9d9\build\ 
--local-work-dir=D:\linear-extra\ 
--ide-backend-tools-path=D:\linear-extra\.stack-work\install\x86_64-windows\lts-3.7\7.10.2\bin\;C:\Users\Daniel\AppData\Roaming\stack\snapshots\x86_64-windows\lts-3.7\7.10.2\bin\;
--dist-dir=D:\linear-extra\.stack-work\dist\d96ab9d9\ 
--ghc-option=-hide-all-packages 
--ghc-option=-iD:\linear-extra\ 
--ghc-option=-iD:\linear-extra\src\ 
--ghc-option=-iD:\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\ 
--ghc-option=-iD:\linear-extra\.stack-work\dist\d96ab9d9\build\ 
--ghc-option=-stubdir=D:\linear-extra\.stack-work\dist\d96ab9d9\build\ 
--ghc-option=-package=base 
--ghc-option=-package=binary-0.7.5.0 
--ghc-option=-package=lens-4.12.3 
--ghc-option=-package=linear-1.19.1.3 
--ghc-option=-rtsopts 
--ghc-option=-with-rtsopts=-N 
--ghc-option=-iD:\linear-extra\ 
--ghc-option=-iD:\linear-extra\test\ 
--ghc-option=-iD:\linear-extra\.stack-work\dist\d96ab9d9\build\autogen\ 
--ghc-option=-iD:\linear-extra\.stack-work\dist\d96ab9d9\build\ 
--ghc-option=-stubdir=D:\linear-extra\.stack-work\dist\d96ab9d9\build\ 
--ghc-option=-package=base 
--package-db=C:\Users\Daniel\AppData\Roaming\stack\snapshots\x86_64-windows\lts-3.7\7.10.2\pkgdb\;D:\linear-extra\.stack-work\install\x86_64-windows\lts-3.7\7.10.2\pkgdb\         

[lukexi]

@ncreep interesting! I've got this now:

lukex_000@Marble MINGW64 ~/Projects/linear-extra
$ stack ide start linear-extra
{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.10208 @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\msys64\\usr\\local\\ghc\\mingw\\bin:C:\\msys64\\usr\\local\\ghc\\mingw\\lib:C:\\msys64\\mingw64\\bin:C:\\msys64\\usr\\local\\bin:C:\\msys64\\usr\\bin:C:\\msys64\\usr\\bin:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5\\ConEmu:C:\\ProgramData\\Oracle\\Java\\javapath:C:\\Program Files (x86)\\Intel\\iCLS Client:C:\\Program Files\\Intel\\iCLS Client:C:\\Program Files\\Broadcom\\Broadcom 802.11 Network Adapter:C:\\Program Files (x86)\\Python27:C:\\Program Files (x86)\\Python27\\Scripts:C:\\Windows\\system32:C:\\Windows:C:\\Windows\\System32\\Wbem:C:\\Windows\\System32\\WindowsPowerShell\\v1.0:C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common:C:\\Program Files\\WIDCOMM\\Bluetooth Software:C:\\Program Files\\WIDCOMM\\Bluetooth Software\\syswow64:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn:C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit:C:\\msys64\\usr\\local\\ghc\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\cabal\\bin:C:\\Program Files\\Sublime Text 3:C:\\msys64\\usr\\bin\\site_perl:C:\\msys64\\usr\\bin\\vendor_perl:C:\\msys64\\usr\\bin\\core_perl @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
ide-backend-server.exe: warning: _tzset from msvcrt is linked instead of __imp__tzset
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_FcNvVmq71td3LXgYeLF4lp:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}
{"tag":"RequestGetSourceErrors", "contents":[]}
{"tag":"ResponseGetSourceErrors","contents":[{"errorSpan":{"tag":"TextSpan","contents":"<no location info>"},"errorKind":"KindError","errorMsg":"module `Paths_linear_extra' is defined in multiple files: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\build\\autogen\\Paths_linear_extra.hs\n
          C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\x86_64-windows\\Cabal-1.22.4.0\\build\\autogen\\Paths_linear_extra.hs"}]}

[lukexi]

@ncreep I can't reproduce your error but I wonder if re-enabling buffering in https://github.com/commercialhaskell/stack-ide/blob/master/stack-ide/src/main/Main.hs#L58 has any effect? (commenting out that line should do the trick)

[ncreep]

@lukexi, even with buffering enabled, I still get the same error.
A quick search shows similar issues with lazy bytestrings on Windows 64 bit (see here).
But the code that actually throws the exception uses strict bytestrings. So I still have no idea what's going on.

Are you running a 32 or 64 bit machine?

[lukexi]

Hmm weird. I'm on 64bit. I'll see what else I can figure out too!

[lukexi]

@ncreep do you mind opening a second issue for that one, by the way?

I've gotten further (nearly all the way!) - after deleting .stack-work/:

{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.9128 @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\msys64\\usr\\local\\ghc\\mingw\\bin:C:\\msys64\\usr\\local\\ghc\\mingw\\lib:C:\\msys64\\mingw64\\bin:C:\\msys64\\usr\\local\\bin:C:\\msys64\\usr\\bin:C:\\msys64\\usr\\bin:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5\\ConEmu:C:\\ProgramData\\Oracle\\Java\\javapath:C:\\Program Files (x86)\\Intel\\iCLS Client:C:\\Program Files\\Intel\\iCLS Client:C:\\Program Files\\Broadcom\\Broadcom 802.11 Network Adapter:C:\\Program Files (x86)\\Python27:C:\\Program Files (x86)\\Python27\\Scripts:C:\\Windows\\system32:C:\\Windows:C:\\Windows\\System32\\Wbem:C:\\Windows\\System32\\WindowsPowerShell\\v1.0:C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common:C:\\Program Files\\WIDCOMM\\Bluetooth Software:C:\\Program Files\\WIDCOMM\\Bluetooth Software\\syswow64:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn:C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit:C:\\msys64\\usr\\local\\ghc\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\cabal\\bin:C:\\Program Files\\Sublime Text 3:C:\\msys64\\usr\\bin\\site_perl:C:\\msys64\\usr\\bin\\vendor_perl:C:\\msys64\\usr\\bin\\core_perl @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
ide-backend-server.exe: warning: _tzset from msvcrt is linked instead of __imp__tzset
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}
{"tag":"RequestGetSourceErrors", "contents":[]}
{"tag":"ResponseGetSourceErrors","contents":[{"errorSpan":{"tag":"TextSpan","contents":"<no location info>"},"errorKind":"KindError","errorMsg":"module `Main' is defined in multiple files: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\Setup.hs\n
                    C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\test\\Spec.hs"}]}

So it seems to be trying to load Setup.hs as part of the project now. I'm not sure what would cause this... @snoyberg @chrisdone @mgsloan any ideas??

Removing Spec.hs gives:

{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.5872 @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\msys64\\usr\\local\\ghc\\mingw\\bin:C:\\msys64\\usr\\local\\ghc\\mingw\\lib:C:\\msys64\\mingw64\\bin:C:\\msys64\\usr\\local\\bin:C:\\msys64\\usr\\bin:C:\\msys64\\usr\\bin:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5\\ConEmu:C:\\ProgramData\\Oracle\\Java\\javapath:C:\\Program Files (x86)\\Intel\\iCLS Client:C:\\Program Files\\Intel\\iCLS Client:C:\\Program Files\\Broadcom\\Broadcom 802.11 Network Adapter:C:\\Program Files (x86)\\Python27:C:\\Program Files (x86)\\Python27\\Scripts:C:\\Windows\\system32:C:\\Windows:C:\\Windows\\System32\\Wbem:C:\\Windows\\System32\\WindowsPowerShell\\v1.0:C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common:C:\\Program Files\\WIDCOMM\\Bluetooth Software:C:\\Program Files\\WIDCOMM\\Bluetooth Software\\syswow64:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn:C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit:C:\\msys64\\usr\\local\\ghc\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\cabal\\bin:C:\\Program Files\\Sublime Text 3:C:\\msys64\\usr\\bin\\site_perl:C:\\msys64\\usr\\bin\\vendor_perl:C:\\msys64\\usr\\bin\\core_perl @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
ide-backend-server.exe: warning: _tzset from msvcrt is linked instead of __imp__tzset
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}
{"tag":"RequestGetSourceErrors", "contents":[]}
{"tag":"ResponseGetSourceErrors","contents":[{"errorSpan":{"tag":"ProperSpan","contents":{"spanFromLine":1,"spanFilePath":"Setup.hs","spanToColumn":27,"spanFromColumn":8,"spanToLine":1}},"errorKind":"KindError","errorMsg":"Could not find module `Distribution.Simple'\nIt is a member of the hidden package `Cabal-1.22.4.0'.\nUse -v to see a list of the files searched for."}]}

and removing Setup.hs finally succeeds, giving

{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.9928 @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\msys64\\usr\\local\\ghc\\mingw\\bin:C:\\msys64\\usr\\local\\ghc\\mingw\\lib:C:\\msys64\\mingw64\\bin:C:\\msys64\\usr\\local\\bin:C:\\msys64\\usr\\bin:C:\\msys64\\usr\\bin:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5\\ConEmu:C:\\ProgramData\\Oracle\\Java\\javapath:C:\\Program Files (x86)\\Intel\\iCLS Client:C:\\Program Files\\Intel\\iCLS Client:C:\\Program Files\\Broadcom\\Broadcom 802.11 Network Adapter:C:\\Program Files (x86)\\Python27:C:\\Program Files (x86)\\Python27\\Scripts:C:\\Windows\\system32:C:\\Windows:C:\\Windows\\System32\\Wbem:C:\\Windows\\System32\\WindowsPowerShell\\v1.0:C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common:C:\\Program Files\\WIDCOMM\\Bluetooth Software:C:\\Program Files\\WIDCOMM\\Bluetooth Software\\syswow64:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn:C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit:C:\\msys64\\usr\\local\\ghc\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\cabal\\bin:C:\\Program Files\\Sublime Text 3:C:\\msys64\\usr\\bin\\site_perl:C:\\msys64\\usr\\bin\\vendor_perl:C:\\msys64\\usr\\bin\\core_perl @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
ide-backend-server.exe: warning: _tzset from msvcrt is linked instead of __imp__tzset
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}
{"tag":"RequestGetSourceErrors", "contents":[]}
{"tag":"ResponseGetSourceErrors","contents":[]}

and to be sure, introducing a source error works!

{"tag":"ResponseWelcome","contents":[0,1,1]}
{"tag":"ResponseLog","contents":"[Info] Initializing ide-backend session @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:197:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Session dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\session.10440 @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:210:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Dist dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\dist\\d96ab9d9\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:212:3)\n"}
{"tag":"ResponseLog","contents":"[Debug] Local working dir = C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\ @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update .\\IdeSession\\Update.hs:219:17)\n"}
{"tag":"ResponseLog","contents":"[Info] Searching for ide-backend-server on this path: C:\\msys64\\home\\lukex_000\\Projects\\linear-extra\\.stack-work\\install\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\Users\\lukex_000\\AppData\\Roaming\\stack\\snapshots\\x86_64-windows\\lts-3.7\\7.10.2\\bin\\:C:\\msys64\\usr\\local\\ghc\\mingw\\bin:C:\\msys64\\usr\\local\\ghc\\mingw\\lib:C:\\msys64\\mingw64\\bin:C:\\msys64\\usr\\local\\bin:C:\\msys64\\usr\\bin:C:\\msys64\\usr\\bin:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5:C:\\Program Files\\cmder_mini\\vendor\\conemu-maximus5\\ConEmu:C:\\ProgramData\\Oracle\\Java\\javapath:C:\\Program Files (x86)\\Intel\\iCLS Client:C:\\Program Files\\Intel\\iCLS Client:C:\\Program Files\\Broadcom\\Broadcom 802.11 Network Adapter:C:\\Program Files (x86)\\Python27:C:\\Program Files (x86)\\Python27\\Scripts:C:\\Windows\\system32:C:\\Windows:C:\\Windows\\System32\\Wbem:C:\\Windows\\System32\\WindowsPowerShell\\v1.0:C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common:C:\\Program Files\\WIDCOMM\\Bluetooth Software:C:\\Program Files\\WIDCOMM\\Bluetooth Software\\syswow64:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL:C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT:C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn:C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit:C:\\msys64\\usr\\local\\ghc\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin:C:\\Users\\lukex_000\\AppData\\Roaming\\cabal\\bin:C:\\Program Files\\Sublime Text 3:C:\\msys64\\usr\\bin\\site_perl:C:\\msys64\\usr\\bin\\vendor_perl:C:\\msys64\\usr\\bin\\core_perl @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:319:5)\n"}
{"tag":"ResponseLog","contents":"[Info] Found ide-backend-server - using this one: C:\\Users\\lukex_000\\AppData\\Roaming\\local\\bin\\ide-backend-server.exe @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.RPC.Client .\\IdeSession\\RPC\\Client.hs:321:5)\n"}
ide-backend-server.exe: warning: _tzset from msvcrt is linked instead of __imp__tzset
{"tag":"ResponseLog","contents":"[Debug] Recompile required, starting... @(ideba_F6bAQFcZd5YGI7e12HY89O:IdeSession.Update.ExecuteSessionUpdate .\\IdeSession\\Update\\ExecuteSessionUpdate.hs:223:5)\n"}
{"tag":"RequestGetSourceErrors", "contents":[]}
{"tag":"ResponseGetSourceErrors","contents":[{"errorSpan":{"tag":"ProperSpan","contents":{"spanFromLine":11,"spanFilePath":"src\\Linear\\Extra.hs","spanToColumn":2,"spanFromColumn":1,"spanToLine":11}},"errorKind":"KindError","errorMsg":"Parse error: naked expression at top level\nPerhaps you intended to use TemplateHaskell"}]}

So we're super close now : )

[lukexi]

Oh, awesome news, this was just me being out of date and failing to heed #81

I've tested manually following that and everything works perfectly, so I've just got to update stack-ide-sublime to implement the new scheme. Yahooo and thanks @ncreep for the amazing work on ide-backend - we'll figure out your odd issue next : )