Documentation outside projects

[lyh970817]

The hover documentation doesn't seem to work on coc.vim (tested with call CocAction('doHover') when cursor is on a function like sum). Everything else is working fine. call CocAction('doHover') also works fine for other languages.

[Avi-D-coder]

I get this in the coc docs window do you?

sum :: Any Integer -> Integer
sum :: forall (t :: * -> *) a. (Foldable t, Num a) => t a -> a


The `sum` function computes the sum of the numbers of a structure.



[Documentation](file:///home/user/.ghcup/ghc/8.8.3/share/doc/ghc-8.8.3/html/libraries/base-4.13.0.0/Data-Foldable.html#v:sum)

[Source](file:///home/user/.ghcup/ghc/8.8.3/share/doc/ghc-8.8.3/html/libraries/base-4.13.0.0/src/Data-Foldable.html#sum)

base Data.Foldable

[louwers]

It works for me too with Coc.

Ask for Coc specific help on https://gitter.im/neoclide/coc.nvim

This is not the place for that.

[Avi-D-coder]

@lyh970817 You may not have generated a hoogle database. Check the hie readme for instructions for cabal or stack

[lyh970817]

@lyh970817 You may not have generated a hoogle database. Check the hie readme for instructions for cabal or stack

Thanks. I've realized that too. I did have a hoogle database but I've tried to regenerate it and set HIE_HOOGLE_DATABASE="$HOME/.hoogle/default-haskell-5.0.17.hoo". It still doesn't work but I found these messages in the coc debug info

2020-04-14 00:11:29.247987052 [ThreadId 4] - Run entered for HIE(hie-8.8.3) Version 1.3, Git revision 78eb87b221481d81b8764c821ab3d673e9768464 (3873 commits) x86_64 ghc-8.8.3
2020-04-14 00:11:29.254453103 [ThreadId 4] - Operating as a LSP server on stdio
2020-04-14 00:11:29.254604875 [ThreadId 4] - Current directory:/home/lyh970817
2020-04-14 00:11:29.254720905 [ThreadId 4] - Operating system:linux
2020-04-14 00:11:29.255430882 [ThreadId 4] - args:["--lsp"]
2020-04-14 00:11:29.318052289 [ThreadId 4] - Could not find a Project for file: /home/lyh970817/File.hs
2020-04-14 00:11:29.318241283 [ThreadId 4] - Module "/home/lyh970817/File.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817", cradleOptsProg = CradleAction: Direct}
2020-04-14 00:11:29.318684066 [ThreadId 4] - Executing GHC on path with args: --numeric-version
2020-04-14 00:11:29.356956607 [ThreadId 9] - Executing GHC on path with args: --print-libdir
Using hie version: Version 1.3, Git revision 78eb87b221481d81b8764c821ab3d673e9768464 (3873 commits) x86_64 ghc-8.8.3
2020-04-14 00:11:31.391215903 [ThreadId 15] - New cradle: /home/lyh970817/.tmp/21:59-04-13.hs
2020-04-14 00:11:31.392684989 [ThreadId 15] - Could not find a Project for file: /home/lyh970817/.tmp/21:59-04-13.hs
2020-04-14 00:11:31.3928309 [ThreadId 15] - Module "/home/lyh970817/.tmp/21:59-04-13.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817", cradleOptsProg = CradleAction: Direct}
2020-04-14 00:11:31.392956659 [ThreadId 15] - Found cradle: Cradle {cradleRootDir = "/home/lyh970817", cradleOptsProg = CradleAction: Direct}
Using hoogle db at: /home/lyh970817/.hoogle/default-haskell-5.0.17.hoo
2020-04-14 00:11:31.666985538 [ThreadId 19] - Cradle did not load succesfully

Is it related to the last two lines?

[Avi-D-coder]

Most likely, do you get type error diagnostics?
stack or cabal?
hie.yaml?
multi component?

[lyh970817]

Most likely, do you get type error diagnostics?
stack or cabal?
hie.yaml?
multi component?

I'm using stack but have not created a project and are not using a hie.yaml at all I just created an hs file and put it somewhere randomly. If I do create a project with stack new and go into the Setup.hs I get something like this

2020-04-14 08:27:05.058725234 [ThreadId 4] - Run entered for HIE(hie-8.8.3) Version 1.3, Git revision 78eb87b221481d81b8764c821ab3d673e9768464 (3873 commits) x86_64 ghc-8.8.3
2020-04-14 08:27:05.059043817 [ThreadId 4] - Operating as a LSP server on stdio
2020-04-14 08:27:05.059085441 [ThreadId 4] - Current directory:/home/lyh970817
2020-04-14 08:27:05.05911235 [ThreadId 4] - Operating system:linux
2020-04-14 08:27:05.059140453 [ThreadId 4] - args:["--lsp"]
2020-04-14 08:27:05.060339086 [ThreadId 4] - Cabal-Helper decided to use: ProjLocStackYaml {plStackYaml = "/home/lyh970817/myp/stack.yaml"}
2020-04-14 08:27:06.490624454 [ThreadId 4] - Module "/home/lyh970817/myp/File.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:06.490709768 [ThreadId 4] - Executing Stack GHC with args: --numeric-version
2020-04-14 08:27:06.860158462 [ThreadId 28] - Executing Stack GHC with args: --print-libdir
Using hie version: Version 1.3, Git revision 78eb87b221481d81b8764c821ab3d673e9768464 (3873 commits) x86_64 ghc-8.8.3
2020-04-14 08:27:07.222829025 [ThreadId 34] - New cradle: /home/lyh970817/myp/Setup.hs
2020-04-14 08:27:07.223216675 [ThreadId 34] - Cabal-Helper decided to use: ProjLocStackYaml {plStackYaml = "/home/lyh970817/myp/stack.yaml"}
Using hoogle db at: /home/lyh970817/.hoogle/default-haskell-5.0.17.hoo
2020-04-14 08:27:08.624431659 [ThreadId 34] - Module "/home/lyh970817/myp/Setup.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:08.624497332 [ThreadId 34] - Found cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:09.056331445 [ThreadId 58] - Fail on cradle initialisation: (ExitFailure 2)["Could not obtain flags for: \"Setup.hs\".","","This module was not part of any component we are aware of.","","Component: ChLibName ChMainLibName with source directory: [\"src\"]","Component: ChExeName \"myp-exe\" with source directory: [\"app\"]","","","To expose a module, refer to:","https://docs.haskellstack.org/en/stable/GUIDE/","If you are using `package.yaml` then you don't have to manually expose modules.","Maybe you didn't set the source directories for your project correctly."]
2020-04-14 08:27:09.056507995 [ThreadId 34] - ghcDispatcher:Got error for a request: IdeError {ideCode = OtherError, ideMessage = "Fail on initialisation for \"/home/lyh970817/myp/Setup.hs\". Could not obtain flags for: \"Setup.hs\".", ideInfo = Null} with mid: Nothing
2020-04-14 08:27:09.056590428 [ThreadId 34] - New cradle: /home/lyh970817/myp/Setup.hs
2020-04-14 08:27:09.05694471 [ThreadId 34] - Cabal-Helper decided to use: ProjLocStackYaml {plStackYaml = "/home/lyh970817/myp/stack.yaml"}
2020-04-14 08:27:10.49384344 [ThreadId 34] - Module "/home/lyh970817/myp/Setup.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:10.493913638 [ThreadId 34] - Found cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:10.925542302 [ThreadId 80] - Fail on cradle initialisation: (ExitFailure 2)["Could not obtain flags for: \"Setup.hs\".","","This module was not part of any component we are aware of.","","Component: ChLibName ChMainLibName with source directory: [\"src\"]","Component: ChExeName \"myp-exe\" with source directory: [\"app\"]","","","To expose a module, refer to:","https://docs.haskellstack.org/en/stable/GUIDE/","If you are using `package.yaml` then you don't have to manually expose modules.","Maybe you didn't set the source directories for your project correctly."]
2020-04-14 08:27:10.925763731 [ThreadId 34] - ghcDispatcher:Got error for a request: IdeError {ideCode = OtherError, ideMessage = "Fail on initialisation for \"/home/lyh970817/myp/Setup.hs\". Could not obtain flags for: \"Setup.hs\".", ideInfo = Null} with mid: Nothing
2020-04-14 08:27:11.291429928 [ThreadId 34] - New cradle: /home/lyh970817/myp/Setup.hs
2020-04-14 08:27:11.29180652 [ThreadId 34] - Cabal-Helper decided to use: ProjLocStackYaml {plStackYaml = "/home/lyh970817/myp/stack.yaml"}
2020-04-14 08:27:12.716777069 [ThreadId 34] - Module "/home/lyh970817/myp/Setup.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:12.716845418 [ThreadId 34] - Found cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:13.153104377 [ThreadId 102] - Fail on cradle initialisation: (ExitFailure 2)["Could not obtain flags for: \"Setup.hs\".","","This module was not part of any component we are aware of.","","Component: ChLibName ChMainLibName with source directory: [\"src\"]","Component: ChExeName \"myp-exe\" with source directory: [\"app\"]","","","To expose a module, refer to:","https://docs.haskellstack.org/en/stable/GUIDE/","If you are using `package.yaml` then you don't have to manually expose modules.","Maybe you didn't set the source directories for your project correctly."]
2020-04-14 08:27:13.153349196 [ThreadId 34] - ghcDispatcher:Got error for a request: IdeError {ideCode = OtherError, ideMessage = "Fail on initialisation for \"/home/lyh970817/myp/Setup.hs\". Could not obtain flags for: \"Setup.hs\".", ideInfo = Null} with mid: Nothing
2020-04-14 08:27:13.153428155 [ThreadId 34] - New cradle: /home/lyh970817/myp/Setup.hs
2020-04-14 08:27:13.15370313 [ThreadId 34] - Cabal-Helper decided to use: ProjLocStackYaml {plStackYaml = "/home/lyh970817/myp/stack.yaml"}
2020-04-14 08:27:14.577241037 [ThreadId 34] - Module "/home/lyh970817/myp/Setup.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:14.577303015 [ThreadId 34] - Found cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:15.002229841 [ThreadId 125] - Fail on cradle initialisation: (ExitFailure 2)["Could not obtain flags for: \"Setup.hs\".","","This module was not part of any component we are aware of.","","Component: ChLibName ChMainLibName with source directory: [\"src\"]","Component: ChExeName \"myp-exe\" with source directory: [\"app\"]","","","To expose a module, refer to:","https://docs.haskellstack.org/en/stable/GUIDE/","If you are using `package.yaml` then you don't have to manually expose modules.","Maybe you didn't set the source directories for your project correctly."]
2020-04-14 08:27:15.002463364 [ThreadId 34] - ghcDispatcher:Got error for a request: IdeError {ideCode = OtherError, ideMessage = "Fail on initialisation for \"/home/lyh970817/myp/Setup.hs\". Could not obtain flags for: \"Setup.hs\".", ideInfo = Null} with mid: Nothing
2020-04-14 08:27:15.002540018 [ThreadId 34] - New cradle: /home/lyh970817/myp/Setup.hs
2020-04-14 08:27:15.002806916 [ThreadId 34] - Cabal-Helper decided to use: ProjLocStackYaml {plStackYaml = "/home/lyh970817/myp/stack.yaml"}
2020-04-14 08:27:16.399185114 [ThreadId 34] - Module "/home/lyh970817/myp/Setup.hs" is loaded by Cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:16.399248852 [ThreadId 34] - Found cradle: Cradle {cradleRootDir = "/home/lyh970817/myp", cradleOptsProg = CradleAction: Other Stack}
2020-04-14 08:27:16.826857977 [ThreadId 147] - Fail on cradle initialisation: (ExitFailure 2)["Could not obtain flags for: \"Setup.hs\".","","This module was not part of any component we are aware of.","","Component: ChLibName ChMainLibName with source directory: [\"src\"]","Component: ChExeName \"myp-exe\" with source directory: [\"app\"]","","","To expose a module, refer to:","https://docs.haskellstack.org/en/stable/GUIDE/","If you are using `package.yaml` then you don't have to manually expose modules.","Maybe you didn't set the source directories for your project correctly."]
2020-04-14 08:27:16.827086349 [ThreadId 34] - ghcDispatcher:Got error for a request: IdeError {ideCode = OtherError, ideMessage = "Fail on initialisation for \"/home/lyh970817/myp/Setup.hs\". Could not obtain flags for: \"Setup.hs\".", ideInfo = Null} with mid: Nothing

By type diagnostics do you mean like when I try to sum ['a',2] and it says I can't do that because 'a' is not Num?

Sorry I'm not sure what multi component is... But I have not applied any config so everything should be the default?

[fendor]

Opening setup.hs is not supported, so that is expected

[lyh970817]

Opening setup.hs is not supported, so that is expected

Thanks! I can see the documentation now if I go into app/Main.hs. The debug info says cradle has been loaded successfully. I'm wondering if there is any way to make the documentation work globally not just inside projecs?

[fendor]

I'm wondering if there is any way to make the documentation work globally not just inside projecs?

I assume so, but currently it is only supported in projects.

[lyh970817]

I'm wondering if there is any way to make the documentation work globally not just inside projecs?

I assume so, but currently it is only supported in projects.

I see. Thanks so much!