Internal library component not available for REPL

[rikvdkleij]

Cabal 2 support internal libraries and as I understand Stack version 1.9.3 also.

I expect that that stack ide targets gives all components but the internal libraries are not mentioned.
Also stack repl [name of lib] does not work.

Steps to reproduce

Create cabal file packagename.cabal which contains components:
library
library libname

Expected

To work:
stack repl packagename:lib:libname

REPL is started.

Actual

What actually happened.
Error parsing targets: Directory not found: packagename:lib:libname

Also when I start a REPL with a component which depends on the internal library, the internal modules can not be loaded.

Stack version

1.9.3

[dbaynard]

@mihaimaruseac Would you take a look, please?

[dbaynard]

@rikvdkleij Thanks for the report. Would you please indicate which platform you are on, paste the output of stack --version, and also paste the verbose logs corresponding to the error messages (you can wrap the log in <details></details> tags)?

[rikvdkleij]

Platform is macOS.

stack --version
Version 1.9.3, Git revision 40cf7b37526b86d1676da82167ea8758a854953b (6211 commits) x86_64 hpack-0.31.1

What do you mean with the details tags? I can can run the command with the --verbose flag and then?

[mihaimaruseac]

See also #4148, unfortunately until March I don't really have time to look into this due to personal reasons. Hopefully after March I can get back to making internal libraries work as they should everywhere in Stack.

@rikvdkleij, you can copy the output of --verbose and paste it in a comment here, between

<details> ` ` `

and

` ` `</details>

(just make sure you remove the spaces between the ` characters). The output would look like

``` This is something from the output. Another line of the output. And yet another one. And so on and on and on ... ```

[rikvdkleij]

@mihaimaruseac Thanks for your reply! Great that you will solve this issue! Currently this is a blocker to use internal libraries. Also for IDE support.

Verbose log in which did some renaming:

Version 1.9.3, Git revision 40cf7b37526b86d1676da82167ea8758a854953b (6211 commits) x86_64 hpack-0.31.1
2019-02-05 15:23:05.618589: [debug] Checking for project config at: rik/app/stack.yaml
2019-02-05 15:23:05.618954: [debug] Loading project config file stack.yaml
2019-02-05 15:23:05.620342: [debug] Decoding build plan from: /Users/rik/.stack/build-plan/lts-12.26.yaml
2019-02-05 15:23:05.620396: [debug] Trying to decode /Users/rik/.stack/build-plan-cache/lts-12.26.cache
2019-02-05 15:23:05.622568: [debug] Success decoding /Users/rik/.stack/build-plan-cache/lts-12.26.cache
2019-02-05 15:23:05.625808: [debug] Potential GHC builds: standard
2019-02-05 15:23:05.625887: [debug] Found already installed GHC builds: standard
2019-02-05 15:23:05.626380: [debug] Getting global package database location
2019-02-05 15:23:05.626609: [debug] Getting Cabal package version
2019-02-05 15:23:05.626657: [debug] Asking GHC for its version
2019-02-05 15:23:05.626771: [debug] Run process: /Users/rik/.stack/programs/x86_64-osx/ghc-8.4.4/bin/ghc-pkg --no-user-package-db list --global
2019-02-05 15:23:05.627500: [debug] Run process: /Users/rik/.stack/programs/x86_64-osx/ghc-8.4.4/bin/ghc-pkg --no-user-package-db field --simple-output Cabal version
2019-02-05 15:23:05.628207: [debug] Run process: /Users/rik/.stack/programs/x86_64-osx/ghc-8.4.4/bin/ghc --numeric-version
2019-02-05 15:23:05.718585: [debug] Process finished in 91ms: /Users/rik/.stack/programs/x86_64-osx/ghc-8.4.4/bin/ghc-pkg --no-user-package-db field --simple-output Cabal version
2019-02-05 15:23:05.718777: [debug] Process finished in 92ms: /Users/rik/.stack/programs/x86_64-osx/ghc-8.4.4/bin/ghc-pkg --no-user-package-db list --global
2019-02-05 15:23:05.731800: [debug] Process finished in 103ms: /Users/rik/.stack/programs/x86_64-osx/ghc-8.4.4/bin/ghc --numeric-version
2019-02-05 15:23:05.731908: [debug] GHC version is: ghc-8.4.4
2019-02-05 15:23:05.731987: [debug] Resolving package entries
2019-02-05 15:23:05.732114: [debug] Trying to decode /Users/rik/.stack/loaded-snapshot-cache/x86_64-osx/ghc-8.4.4/lts-12.26.cache
2019-02-05 15:23:05.769709: [debug] Success decoding /Users/rik/.stack/loaded-snapshot-cache/x86_64-osx/ghc-8.4.4/lts-12.26.cache
2019-02-05 15:23:05.770064: [debug] Starting to execute command inside EnvConfig
2019-02-05 15:23:05.770115: [debug] Parsing the targets
2019-02-05 15:23:05.792059: [debug] Trying to decode /Users/rik/.stack/indices/Hackage/01-index.cache
2019-02-05 15:23:06.004836: [debug] Success decoding /Users/rik/.stack/indices/Hackage/01-index.cache
2019-02-05 15:23:06.026014: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow/tensorflow.cabal
2019-02-05 15:23:06.051028: [debug] Finished in 25ms: getPackageFiles rik/tensorflow-haskell/tensorflow/tensorflow.cabal
2019-02-05 15:23:06.052236: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-core-ops/tensorflow-core-ops.cabal
2019-02-05 15:23:06.053083: [debug] Finished in 1ms: getPackageFiles rik/tensorflow-haskell/tensorflow-core-ops/tensorflow-core-ops.cabal
2019-02-05 15:23:06.053873: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-logging/tensorflow-logging.cabal
2019-02-05 15:23:06.061639: [debug] Finished in 8ms: getPackageFiles rik/tensorflow-haskell/tensorflow-logging/tensorflow-logging.cabal
2019-02-05 15:23:06.062817: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-mnist/tensorflow-mnist.cabal
2019-02-05 15:23:06.078738: [debug] Finished in 16ms: getPackageFiles rik/tensorflow-haskell/tensorflow-mnist/tensorflow-mnist.cabal
2019-02-05 15:23:06.080513: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-mnist-input-data/tensorflow-mnist-input-data.cabal
2019-02-05 15:23:06.084524: [debug] Finished in 4ms: getPackageFiles rik/tensorflow-haskell/tensorflow-mnist-input-data/tensorflow-mnist-input-data.cabal
2019-02-05 15:23:06.085547: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-opgen/tensorflow-opgen.cabal
2019-02-05 15:23:06.089598: [debug] Finished in 4ms: getPackageFiles rik/tensorflow-haskell/tensorflow-opgen/tensorflow-opgen.cabal
2019-02-05 15:23:06.090695: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-ops/tensorflow-ops.cabal
2019-02-05 15:23:06.197660: [debug] Finished in 107ms: getPackageFiles rik/tensorflow-haskell/tensorflow-ops/tensorflow-ops.cabal
2019-02-05 15:23:06.198739: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-proto/tensorflow-proto.cabal
2019-02-05 15:23:06.251441: [debug] Finished in 53ms: getPackageFiles rik/tensorflow-haskell/tensorflow-proto/tensorflow-proto.cabal
2019-02-05 15:23:06.254476: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-records/tensorflow-records.cabal
2019-02-05 15:23:06.258472: [debug] Finished in 4ms: getPackageFiles rik/tensorflow-haskell/tensorflow-records/tensorflow-records.cabal
2019-02-05 15:23:06.259349: [debug] Start: getPackageFiles rik/tensorflow-haskell/tensorflow-records-conduit/tensorflow-records-conduit.cabal
2019-02-05 15:23:06.261253: [debug] Finished in 2ms: getPackageFiles rik/tensorflow-haskell/tensorflow-records-conduit/tensorflow-records-conduit.cabal
2019-02-05 15:23:06.262226: [debug] Start: getPackageFiles rik/app/app.cabal
2019-02-05 15:23:06.276925: [debug] Finished in 15ms: getPackageFiles rik/app/app.cabal
2019-02-05 15:23:06.281968: [debug] Parsing the targets
Error parsing targets: Directory not found: app:lib:detection
Note that to specify options to be passed to GHCi, use the --ghci-options flag

[rikvdkleij]

@mihaimaruseac Later on I added spaces between the ` but did not see a difference in output Also noticed that you have changed the content.

[mihaimaruseac]

I tried to get the formatting fixed but failed. It's ok though, the log is readable. Thank you for it

[dbaynard]

You need a blank line between the html tags and the backticks 👍.

[rikvdkleij]

@dbaynard Thanks!

[dbaynard]

Do the other commands work, e.g. build?

[rikvdkleij]

Yes, stack build works.