openDirStream: does not exist

[mkchoi212]

I cloned the ghc802 branch to install ghc-mod on my system with the below configurations.

stack --version
Version 1.6.1, Git revision f25811329bbc40b0c21053a8160c56f923e1201b (5435 commits) x86_64 hpack-0.20.0

cabal --version
cabal-install version 2.0.0.1
compiled using version 2.0.1.1 of the Cabal library

ghc --version
The Glorious Glasgow Haskell Compilation System, version 8.2.2

I then created a stack.yaml as mentioned in #922 (comment) and then ran stack build.

The error output I am getting is the following

/Users/me/cabal-helper/: getDirectoryContents:openDirStream: does not exist (No such file or directory)

[DanielG]

Is that literally the only output you get from stack build? That seems rather strange I suggest running it with turned up verbosity as it stands there isn't really much to go on.

Also it looks to me like you're on OSX, correct?

[mkchoi212]

Yes and I am on High Sierra 10.13.2 (17C205).

The verbose output seems to not reveal anything.

Version 1.6.1, Git revision f25811329bbc40b0c21053a8160c56f923e1201b (5435 commits) x86_64 hpack-0.20.0
2018-01-19 09:09:53.376291: [debug] Checking for project config at: /Users/mikechoi/ghc-mod/stack.yaml
@(Stack/Config.hs:842:9)
2018-01-19 09:09:53.376836: [debug] Loading project config file stack.yaml
@(Stack/Config.hs:868:13)
2018-01-19 09:09:53.379709: [debug] Decoding build plan from: /Users/mikechoi/.stack/build-plan/lts-10.1.yaml
@(Stack/Snapshot.hs:150:5)
2018-01-19 09:09:53.379855: [debug] Trying to decode /Users/mikechoi/.stack/build-plan-cache/lts-10.1.cache
@(Data/Store/VersionTagged.hs:66:5)
2018-01-19 09:09:53.394523: [debug] Success decoding /Users/mikechoi/.stack/build-plan-cache/lts-10.1.cache
@(Data/Store/VersionTagged.hs:70:13)
2018-01-19 09:09:53.394888: [debug] Using standard GHC build
@(Stack/Setup.hs:619:9)
2018-01-19 09:09:53.401180: [debug] Asking GHC for its version
@(Stack/Setup/Installed.hs:98:13)
2018-01-19 09:09:53.401881: [debug] Getting Cabal package version
@(Stack/GhcPkg.hs:185:5)
2018-01-19 09:09:53.402092: [debug] Run process: /Users/mikechoi/.stack/programs/x86_64-osx/ghc-8.2.2/bin/ghc --numeric-version
@(System/Process/Log.hs:37:3)
2018-01-19 09:09:53.402219: [debug] Getting global package database location
@(Stack/GhcPkg.hs:46:5)
2018-01-19 09:09:53.403246: [debug] Run process: /Users/mikechoi/.stack/programs/x86_64-osx/ghc-8.2.2/bin/ghc-pkg --no-user-package-db field --simple-output Cabal version
@(System/Process/Log.hs:37:3)
2018-01-19 09:09:53.404154: [debug] Run process: /Users/mikechoi/.stack/programs/x86_64-osx/ghc-8.2.2/bin/ghc-pkg --no-user-package-db list --global
@(System/Process/Log.hs:37:3)
2018-01-19 09:09:53.488771: [debug] Process finished in 85ms: /Users/mikechoi/.stack/programs/x86_64-osx/ghc-8.2.2/bin/ghc-pkg --no-user-package-db field --simple-output Cabal version
@(System/Process/Log.hs:44:3)
2018-01-19 09:09:53.491606: [debug] Process finished in 87ms: /Users/mikechoi/.stack/programs/x86_64-osx/ghc-8.2.2/bin/ghc-pkg --no-user-package-db list --global
@(System/Process/Log.hs:44:3)
2018-01-19 09:09:53.565037: [debug] Process finished in 162ms: /Users/mikechoi/.stack/programs/x86_64-osx/ghc-8.2.2/bin/ghc --numeric-version
@(System/Process/Log.hs:44:3)
2018-01-19 09:09:53.565193: [debug] GHC version is: ghc-8.2.2
@(Stack/Setup/Installed.hs:102:13)
2018-01-19 09:09:53.565412: [debug] Resolving package entries
@(Stack/Setup.hs:252:5)
2018-01-19 09:09:53.565563: [debug] Trying to decode /Users/mikechoi/.stack/loaded-snapshot-cache/x86_64-osx/ghc-8.2.2/lts-10.1.cache
@(Data/Store/VersionTagged.hs:66:5)
2018-01-19 09:09:53.617736: [debug] Success decoding /Users/mikechoi/.stack/loaded-snapshot-cache/x86_64-osx/ghc-8.2.2/lts-10.1.cache
@(Data/Store/VersionTagged.hs:70:13)
2018-01-19 09:09:53.618759: [debug] Starting to execute command inside EnvConfig
@(Stack/Runners.hs:170:18)
2018-01-19 09:09:53.618860: [debug] Parsing the targets
@(Stack/Build/Target.hs:460:3)
/Users/mikechoi/cabal-helper/: getDirectoryContents:openDirStream: does not exist (No such file or directory)

[DanielG]

Looks to me like you just got the path to cabal-helper wrong in the stack.yaml file.

[mkchoi212]

Sorry I am a newbie to Haskell but where usually is the cabal-helper??

I installed Haskell-platform to start off with Homebrew.

[DanielG]

It doesn't have a standard location, if you followed the instructions you linked to faithfully it ought to be in the directory you ran the corresponding git clone command.

[mkchoi212]

It seems like I skipped an entire step.... My bad!!

It was late at night ha