category-extras needed, but the stack configuration has no specified version - haskell
I am writing a small Haskell program which need import two modules Control.Functor.Algebra and Control.Morphism.Hylo.
I searched the google. These two modules can be found in category-extras.
So I added category-extras to package.yaml:
dependencies:
- base >= 4.7 && < 5
- category-extras
Then call stack build, but error occured:
E:\work-category-theory\quick-sort>stack build
Stack has not been tested with GHC versions above 8.6, and using 8.8.3, this may fail
Stack has not been tested with Cabal versions above 2.4, but version 3.0.1.0 was found, this may fail
Error: While constructing the build plan, the following exceptions were
encountered:
In the dependencies for quick-sort-0.1.0.0:
category-extras needed, but the stack configuration has no specified
version (latest matching version is 1.0.2)
needed since quick-sort is a build target.
Some different approaches to resolving this:
* Recommended action: try adding the following to your extra-deps
in E:\work-category-theory\quick-sort\stack.yaml:
- category-extras-1.0.2#sha256:511a5668e05af6617d94080e866c9a496e0abd7625d961264755614a73b517f1,10259
Plan construction failed.
Following the prompts, I added category-extras-1.0.2#sha256:511a5668e05af6617d94080e866c9a496e0abd7625d961264755614a73b517f1,10259 to the extra-deps in stack.yaml:
extra-deps:
- category-extras-1.0.2#sha256:511a5668e05af6617d94080e866c9a496e0abd7625d961264755614a73b517f1,10259
But still failed:
E:\work-category-theory\quick-sort>stack build
Stack has not been tested with GHC versions above 8.6, and using 8.8.3, this may fail
Stack has not been tested with Cabal versions above 2.4, but version 3.0.1.0 was found, this may fail
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for category-extras-1.0.2:
categories needed, but the stack configuration has no specified version (latest matching version is 1.0.7)
comonad-extras needed, but the stack configuration has no specified version (latest matching version is 4.0.1)
comonad-transformers needed, but the stack configuration has no specified version (latest matching version is 4.0)
comonads-fd needed, but the stack configuration has no specified version (latest matching version is 4.0)
groupoids needed, but the stack configuration has no specified version (latest matching version is 4.0)
indexed-extras needed, but the stack configuration has no specified version (latest matching version is 0.2)
profunctor-extras needed, but the stack configuration has no specified version (latest matching version is 4.0)
representable-functors needed, but the stack configuration has no specified version (latest matching version
is 3.2.0.2)
representable-profunctors needed, but the stack configuration has no specified version (latest matching version
is 3.2)
needed due to quick-sort-0.1.0.0 -> category-extras-1.0.2
Some different approaches to resolving this:
* Recommended action: try adding the following to your extra-deps in E:\work-category-theory\quick-sort\stack.yaml:
- categories-1.0.7#sha256:e707f8ac06eac755cb508aa67de64ab2e33ce1c54aebb6f43f64c615aa5234f6,1636
- comonad-extras-4.0.1#sha256:60c93aa274239086d96d162c3c8bf7cde33a3e8470ecb56461b2f77d2625521e,1321
- comonad-transformers-4.0#sha256:cdc81f6837836ec4b120ced8503b54a7f1e230e08971cc01717dcd16ba1ceb28,831
- comonads-fd-4.0#sha256:92ed08f50f64aa9ce57214c9f0539e0244225ef4c934065dff819a751b89eeaf,817
- groupoids-4.0#sha256:7d26a2cc5e557773b565f2433b898d7472404a03bafde51fec5f4a7c7936812e,836
- indexed-extras-0.2#sha256:e7e498023e33016fe45467dfee3c1379862e7e6654a806a965958fa1adc00304,1349
- profunctor-extras-4.0#sha256:b436587378964546df3063dad44504fd698cce0f714ce089c1e3b499f063940d,874
- representable-functors-3.2.0.2#sha256:f15e598ca712171408d919803a48dcf786c94e9596a65336a3d66d0886ca60c5,1877
- representable-profunctors-3.2#sha256:d7d902ab21de5bcf9ceeb1b13529aa835a818dad00e75da999241508f89f85c2,786
Plan construction failed.
Following the prompts, I continue to add extra-deps in stack.yaml:
extra-deps:
- category-extras-1.0.2#sha256:511a5668e05af6617d94080e866c9a496e0abd7625d961264755614a73b517f1,10259
- categories-1.0.7#sha256:e707f8ac06eac755cb508aa67de64ab2e33ce1c54aebb6f43f64c615aa5234f6,1636
- comonad-extras-4.0.1#sha256:60c93aa274239086d96d162c3c8bf7cde33a3e8470ecb56461b2f77d2625521e,1321
- comonad-transformers-4.0#sha256:cdc81f6837836ec4b120ced8503b54a7f1e230e08971cc01717dcd16ba1ceb28,831
- comonads-fd-4.0#sha256:92ed08f50f64aa9ce57214c9f0539e0244225ef4c934065dff819a751b89eeaf,817
- groupoids-4.0#sha256:7d26a2cc5e557773b565f2433b898d7472404a03bafde51fec5f4a7c7936812e,836
- indexed-extras-0.2#sha256:e7e498023e33016fe45467dfee3c1379862e7e6654a806a965958fa1adc00304,1349
- profunctor-extras-4.0#sha256:b436587378964546df3063dad44504fd698cce0f714ce089c1e3b499f063940d,874
- representable-functors-3.2.0.2#sha256:f15e598ca712171408d919803a48dcf786c94e9596a65336a3d66d0886ca60c5,1877
- representable-profunctors-3.2#sha256:d7d902ab21de5bcf9ceeb1b13529aa835a818dad00e75da999241508f89f85c2,786
Failed again:
E:\work-category-theory\quick-sort>stack build
Stack has not been tested with GHC versions above 8.6, and using 8.8.3, this may fail
Stack has not been tested with Cabal versions above 2.4, but version 3.0.1.0 was found, this may fail
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for representable-functors-3.2.0.2:
comonad-5.0.6 from stack configuration does not match >=3 && <4 (latest matching version is 3.1)
comonad-transformers-4.0 from stack configuration does not match >=3 && <4 (latest matching version is 3.1)
comonads-fd-4.0 from stack configuration does not match >=3 && <4 (latest matching version is 3.0.3)
containers-0.6.2.1 from stack configuration does not match >=0.3 && <0.6 (latest matching version is 0.5.11.0)
contravariant-1.5.2 from stack configuration does not match >=0.4.1 && <1 (latest matching version is 0.6.1.1)
free-5.1.3 from stack configuration does not match >=3 && <4 (latest matching version is 3.4.2)
mtl-2.2.2 from stack configuration does not match >=2.0.1.0 && <2.2 (latest matching version is 2.1.3.1)
semigroupoids-5.3.4 from stack configuration does not match >=3 && <4 (latest matching version is 3.1)
transformers-0.5.6.2 from stack configuration does not match >=0.2 && <0.4 (latest matching version is 0.3.0.0)
needed due to quick-sort-0.1.0.0 -> representable-functors-3.2.0.2
Some different approaches to resolving this:
* Set 'allow-newer: true' in C:\sr\config.yaml to ignore all version constraints and build anyway.
* Recommended action: try adding the following to your extra-deps in E:\work-category-theory\quick-sort\stack.yaml:
- comonad-3.1#sha256:95ab6440e380de06c6167f52a29903bee3e06295bb15598687305755eb1febd9,1635
- comonad-transformers-3.1#sha256:6641d4d5466a1e5e5b3863654d1df224c0980c332cf648b17ff148312bcf3f3b,1372
- comonads-fd-3.0.3#sha256:7fd04f220367fe8c0cd2b8c35ca15bc77a7d93a3d45f276435a094f9bdb44a60,1376
- containers-0.5.11.0#sha256:28ad7337057442f75bc689315ab4ec7bdf5e6b2c39668f306672cecd82c02798,16685
- contravariant-0.6.1.1#sha256:715c882354db424ed8b79518dab90e103a30a0ac64229f6cc86f0b3bb036c5dc,1493
- free-3.4.2#sha256:ddb52e32cb0e219e7d46b7021c7d1ec54797df878fd1b1ede0732bcacafdd9f0,2262
- mtl-2.1.3.1#sha256:a4283d5070cef5061aa8888c88baf50cd2db1904b254701321a93cf6c0835a11,1618
- semigroupoids-3.1#sha256:66c4375dabc33cff413ab5c1bc73c313fd2768ae21504b1cd1ac9aa8705529dd,3550
- transformers-0.3.0.0#sha256:4ec3dd53be60415dad46e00ec6c7f78bdc37dcda1670cf5abe5c480719b78b60,2318
Plan construction failed.
OK, I continue to add..
- category-extras-1.0.2#sha256:511a5668e05af6617d94080e866c9a496e0abd7625d961264755614a73b517f1,10259
- categories-1.0.7#sha256:e707f8ac06eac755cb508aa67de64ab2e33ce1c54aebb6f43f64c615aa5234f6,1636
- comonad-extras-4.0.1#sha256:60c93aa274239086d96d162c3c8bf7cde33a3e8470ecb56461b2f77d2625521e,1321
- comonad-transformers-4.0#sha256:cdc81f6837836ec4b120ced8503b54a7f1e230e08971cc01717dcd16ba1ceb28,831
- comonads-fd-4.0#sha256:92ed08f50f64aa9ce57214c9f0539e0244225ef4c934065dff819a751b89eeaf,817
- groupoids-4.0#sha256:7d26a2cc5e557773b565f2433b898d7472404a03bafde51fec5f4a7c7936812e,836
- indexed-extras-0.2#sha256:e7e498023e33016fe45467dfee3c1379862e7e6654a806a965958fa1adc00304,1349
- profunctor-extras-4.0#sha256:b436587378964546df3063dad44504fd698cce0f714ce089c1e3b499f063940d,874
- representable-functors-3.2.0.2#sha256:f15e598ca712171408d919803a48dcf786c94e9596a65336a3d66d0886ca60c5,1877
- representable-profunctors-3.2#sha256:d7d902ab21de5bcf9ceeb1b13529aa835a818dad00e75da999241508f89f85c2,786
- comonad-3.1#sha256:95ab6440e380de06c6167f52a29903bee3e06295bb15598687305755eb1febd9,1635
- comonad-transformers-3.1#sha256:6641d4d5466a1e5e5b3863654d1df224c0980c332cf648b17ff148312bcf3f3b,1372
- comonads-fd-3.0.3#sha256:7fd04f220367fe8c0cd2b8c35ca15bc77a7d93a3d45f276435a094f9bdb44a60,1376
- containers-0.5.11.0#sha256:28ad7337057442f75bc689315ab4ec7bdf5e6b2c39668f306672cecd82c02798,16685
- contravariant-0.6.1.1#sha256:715c882354db424ed8b79518dab90e103a30a0ac64229f6cc86f0b3bb036c5dc,1493
- free-3.4.2#sha256:ddb52e32cb0e219e7d46b7021c7d1ec54797df878fd1b1ede0732bcacafdd9f0,2262
- mtl-2.1.3.1#sha256:a4283d5070cef5061aa8888c88baf50cd2db1904b254701321a93cf6c0835a11,1618
- semigroupoids-3.1#sha256:66c4375dabc33cff413ab5c1bc73c313fd2768ae21504b1cd1ac9aa8705529dd,3550
- transformers-0.3.0.0#sha256:4ec3dd53be60415dad46e00ec6c7f78bdc37dcda1670cf5abe5c480719b78b60,2318
Now there is a new error occurred:
E:\work-category-theory\quick-sort>stack build
The same package name is used in multiple local packages
comonad-transformers used in:
- PLImmutable (PLIHackage (PackageIdentifier {pkgName = PackageName "comonad-transformers", pkgVersion = mkVersion [3,1]
}) 6641d4d5466a1e5e5b3863654d1df224c0980c332cf648b17ff148312bcf3f3b,1372 (TreeKey ced3d6e9e6804e43646e6f8b23c8354808074a
403efeadc3e9befd628a78ea46,1116))
- PLImmutable (PLIHackage (PackageIdentifier {pkgName = PackageName "comonad-transformers", pkgVersion = mkVersion [4,0]
}) cdc81f6837836ec4b120ced8503b54a7f1e230e08971cc01717dcd16ba1ceb28,831 (TreeKey 1319b9d5039d6252803e684d0e42431867b20c9
03b49ddb6d5910b2b8eeb02e7,414))
comonads-fd used in:
- PLImmutable (PLIHackage (PackageIdentifier {pkgName = PackageName "comonads-fd", pkgVersion = mkVersion [3,0,3]}) 7fd0
4f220367fe8c0cd2b8c35ca15bc77a7d93a3d45f276435a094f9bdb44a60,1376 (TreeKey 7714b845bc4ba432b5b48054a45ba606ce72c7bfa2242
d3faed5387f8786e5b5,709))
- PLImmutable (PLIHackage (PackageIdentifier {pkgName = PackageName "comonads-fd", pkgVersion = mkVersion [4,0]}) 92ed08
f50f64aa9ce57214c9f0539e0244225ef4c934065dff819a751b89eeaf,817 (TreeKey 275c7b8e4336d289ef0f280260ac9da408f1b41bd2a49b1c
55699bfbf96c9c82,463))
It seems that there is some duplicate packages (comonad-transformers and comonads-fd)?
I remove lower version and rebuild it:
E:\work-category-theory\quick-sort>stack build
Stack has not been tested with GHC versions above 8.6, and using 8.8.3, this may fail
Stack has not been tested with Cabal versions above 2.4, but version 3.0.1.0 was found, this may fail
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for cabal-doctest-1.0.8:
Cabal must match >=1.10 && <3.3, but the stack configuration has no specified version (latest matching version
is 3.2.0.0)
needed due to quick-sort-0.1.0.0 -> cabal-doctest-1.0.8
In the dependencies for distributive-0.6.2:
Cabal needed, but the stack configuration has no specified version (latest matching version is 3.2.0.0)
needed due to quick-sort-0.1.0.0 -> distributive-0.6.2
In the dependencies for hashable-1.3.0.0:
text must match >=0.12 && <1.3, but the stack configuration has no specified version (latest matching version
is 1.2.4.0)
needed due to quick-sort-0.1.0.0 -> hashable-1.3.0.0
In the dependencies for reducers-3.12.3:
text must match >=0.11.1.5 && <1.3, but the stack configuration has no specified version (latest matching version
is 1.2.4.0)
needed due to quick-sort-0.1.0.0 -> reducers-3.12.3
In the dependencies for transformers-0.3.0.0:
base-4.13.0.0 from stack configuration does not match >=2 && <4.8 (latest matching version is 4.7.0.2)
needed due to quick-sort-0.1.0.0 -> transformers-0.3.0.0
Some different approaches to resolving this:
* Build requires unattainable version of base. Since base is a part of GHC, you most likely need to use a different
GHC version with the matching base.
Plan construction failed.
Now I have been completely confused...
Why stack can't resolve packages' dependencies automatically?
Can someone help me?
Very thanks!
Quoting a comment:
Yes, it is new project (a small program). I just use Algebra, Coalgebra and hylo to implement quick-sort. I can write these type constructor and function by myself. For DRY, I found these packages from hackage...
If you need the package exclusively for that, just switch to recursion-schemes as Joseph Sible suggests and spare yourself the trouble. That said, it won't hurt to say a thing or two about the installation difficulties you noted.
category-extras is a very large and very old library which was, a long time ago, split into many other libraries. Ideally, you'd just install some or all of the replacement libraries and forget about category-extras entirely. Unfortunately, Control.Functor.Algebra didn't get an official replacement, according to the list of replacements from the version 1.02 docs (in the case of Control.Morphism.Hylo, at least some of the functionality can be obtained with recursion-schemes). That means you might still want to actually use category-extras.
In any case, one thing you definitely don't want is to install category-extras-1.0.2, the most recent version. It is just a meta-package that provides no code of its own, merely pulling a large number of replacement packages. Furthermore, since that version is from 2012, many of those replacement packages were themselves replaced at this point.
If you really must use category-extras, your best bet might be sticking to category-extras-0.53.5.1 (I'm linking to 0.53.5 because the 0.53.5.1 docs don't show up properly on Hackage), the latest version before the split. It depends on mtl < 2, which is annoying because that is an extremely old version of a package that is used pretty much everywhere. Furthermore, mtl-1.1.1 has a base < 4.6 upper bound. That means GHC 7.4.2 or older is needed, and so installing it with Stack won't work. ghcup won't help either (the earliest GHC it supports is 7.10.3), so you'd have to do a standalone installation GHC 7.4.2, either in a VM or using some other strategy to keep it apart from your usual GHC version.
Related
How to resolve dependency tree with different version ranges of same packages?
I'm trying to set up a happstack-lite application using stack. I initialized project with these commands: stack new my-happstack cd my-happstack stack setup I changed package.yaml so it contains: dependencies: - base >= 4.7 && < 5 - happstack-lite >= 7.3 Then I ran stack build several times and changed extra-deps in stack.yaml in project directory according to recommendations (added dependencies, such as happstack-server). Apparently, I was asked to add to extra-deps the packages already listed there, with different version bounds and one with the same (template-haskell-2.11.1.0): stack.yaml content: extra-deps: - happstack-lite-7.3.6 - happstack-server-7.4.6.4 - Win32-2.2.2.0#sha256:10ed55dd31315f386910c121c1d1d442df83bd2ee92090a753cd65300735a8ca - network-2.6.3.6#sha256:1ca79d81af02d7acd6032d5e6c9bde4618a8fdcfbe19bd42b49d420183975df0 - template-haskell-2.11.1.0#sha256:f90d6ab73ad35c749e8547ca132e7ab5d32d2f8e7bb2e2ff6d597be26b58e061 - transformers-compat-0.5.1.4#sha256:1b4bfa8589afb1ca0e719129ab261bd90ef0cc3e6c0b9963f94970c082b61250 output from stack build: F:\Projects\Haskell\my-happstack>stack build Error: While constructing the build plan, the following exceptions were encountered: In the dependencies for Cabal-2.4.1.0: Win32-2.2.2.0 from stack configuration does not match >=2.3.0.0 && <2.9 (latest matching version is 2.8.3.0) needed due to my-happstack-0.1.0.0 -> Cabal-2.4.1.0 In the dependencies for happstack-server-7.4.6.4: template-haskell-2.14.0.0 from stack configuration does not match <2.12 (latest matching version is 2.11.1.0) needed due to my-happstack-0.1.0.0 -> happstack-server-7.4.6.4 In the dependencies for transformers-base-0.4.5.2: transformers-compat-0.5.1.4 from stack configuration does not match >=0.6.1 (latest matching version is 0.6.4) needed due to my-happstack-0.1.0.0 -> transformers-base-0.4.5.2 Some different approaches to resolving this: * Set 'allow-newer: true' in C:\sr\config.yaml to ignore all version constraints and build anyway. * Consider trying 'stack solver', which uses the cabal-install solver to attempt to find some working build configuration. This can be convenient when dealing with many complicated constraint errors, but results may be unpredictable. * Recommended action: try adding the following to your extra-deps in F:\Projects\Haskell\my-happstack\stack.yaml: Win32-2.8.3.0#sha256:58fa6f52e8a0d455a74bb19445c177f2cc79a0975cae5fd96e2334bd38a516d4 template-haskell-2.11.1.0#sha256:f90d6ab73ad35c749e8547ca132e7ab5d32d2f8e7bb2e2ff6d597be26b58e061 transformers-compat-0.6.4#sha256:d298cd9d1bb7b05160229e244436bae825b53660865e3d5fd695ea0fafec1e6f Plan construction failed. I've tried these steps: 1) Set 'allow-newer: true' in C:\sr\config.yaml. In this case, I'm getting error about wrong types usage from inside one of the dependent packages (can paste error output upon request, if needed). 2) Run stack solver. I've got the error from cabal planner (error output upon request). So, I expect stack to resolve dependencies the way npm does - each package dependencies are resolved independently from other's packages needs. Any advice of how I can solve this particular problem will be helpful, though (including manual dependencies resolving).
Why can't I use Text.Regex in my Stack project?
All I want is to parse a simple string using regex. First question: Should I be using Text.Regex or something else? Stackage lists at least 11 regex packages. I don't care if it's PCRE or Posix. At this point I'll accept anything. Second Question: How do I include Text.Regex in my project? This is my experience so far: package.yaml has dependencies: - base >= 4.7 && < 5 - regex stacky.yaml attempt 1 extra-deps: - regex-1.0.1.3 Response to stack build Error: While constructing the build plan, the following exceptions were encountered: In the dependencies for regex-1.0.1.3: base-compat-0.10.5 from stack configuration does not match >=0.6 && <0.10 (latest matching version is 0.9.3) template-haskell-2.13.0.0 from stack configuration does not match >=2.7 && <2.12 (latest matching version is 2.11.1.0) needed due to CCompiler-0.1.0.0 -> regex-1.0.1.3 Some different approaches to resolving this: * Set 'allow-newer: true' to ignore all version constraints and build anyway. * Consider trying 'stack solver', which uses the cabal-install solver to attempt to find some working build configuration. This can be convenient when dealing with many complicated constraint errors, but results may be unpredictable. * Recommended action: try adding the following to your extra-deps in /Users/adamfrank/Dev/Haskell/CCompiler/stack.yaml: - base-compat-0.9.3 - template-haskell-2.11.1.0 Plan construction failed. stack.yaml attempt 2 extra-deps: - regex-1.0.1.3 - base-compat-0.9.3 - template-haskell-2.11.1.0 Response to stack build: Error: While constructing the build plan, the following exceptions were encountered: In the dependencies for regex-1.0.1.3: template-haskell-2.13.0.0 from stack configuration does not match >=2.7 && <2.12 (latest matching version is 2.11.1.0) needed due to CCompiler-0.1.0.0 -> regex-1.0.1.3 Some different approaches to resolving this: * Set 'allow-newer: true' to ignore all version constraints and build anyway. * Consider trying 'stack solver', which uses the cabal-install solver to attempt to find some working build configuration. This can be convenient when dealing with many complicated constraint errors, but results may be unpredictable. * Recommended action: try adding the following to your extra-deps in /Users/adamfrank/Dev/Haskell/CCompiler/stack.yaml: - template-haskell-2.11.1.0 Plan construction failed. ??? It says I need to add a line I already added. Do I need a different version of regex? If so, which one, and how do I figure that out?
There are a few recommendations in the comments as to what to use: regex-base, but it is also good to understand why it is not compiling. Stackage provides a list of compatible packages in each LTS. You can alter some of the version numbers as long as they respect the version constraints of other dependencies. Not all of these dependency restrictions are well defined in the packages coming from Hackage, which is one of the reasons for using Stackage. Generally each stackage major LTS release is associated with a particular version of GHC which also has a particular version of base. When you pick a major version of LTS, you are also picking a version of GHC and base. If you want to change GHC and/or base versions, it is easier to change the LTS version. The first thing after the LTS version on the Stackage LTS page is the GHC version number. In your case regex requires a version of template-haskell and base-compat that violate the constraints of other dependencies.
stack install ghc-mod fails with dependencies conflicts on OSX 10.13.4
When I try to install ghc-mod via stack I end up having these depencies conflicts Error: While constructing the build plan, the following exceptions were encountered: In the dependencies for ghc-mod-5.8.0.0: Cabal-2.0.1.1 from stack configuration does not match >=1.18 && <1.25 (latest matching version is 1.24.2.0) base-4.10.1.0 from stack configuration does not match >=4.6.0.1 && <4.10 (latest matching version is 4.9.1.0) cabal-helper must match <0.8 && >=0.7.3.0, but the stack configuration has no specified version (latest matching version is 0.7.3.0) extra-1.6.8 from stack configuration does not match <1.6 && >=1.4 (latest matching version is 1.5.3) ghc-8.2.2 from stack configuration does not match >=7.6 && <8.2 haskell-src-exts-1.20.2 from stack configuration does not match <1.20 && >=1.18 (latest matching version is 1.19.1) hlint-2.1.6 from stack configuration does not match <2.1 && >=2.0.8 (latest matching version is 2.0.15) monad-journal-0.8.1 from stack configuration does not match <0.8 && >=0.4 (latest matching version is 0.7.2) optparse-applicative-0.14.2.0 from stack configuration does not match >=0.13.0.0 && <0.14 (latest matching version is 0.13.2.0) needed since ghc-mod is a build target. Some different approaches to resolving this: * Consider trying 'stack solver', which uses the cabal-install solver to attempt to find some working build configuration. This can be convenient when dealing with many complicated constraint errors, but results may be unpredictable. * Recommended action: try adding the following to your extra-deps in /Users/mo/.stack/global-project/stack.yaml: - Cabal-1.24.2.0 - base-4.9.1.0 - cabal-helper-0.7.3.0 - extra-1.5.3 - haskell-src-exts-1.19.1 - hlint-2.0.15 - monad-journal-0.7.2 - optparse-applicative-0.13.2.0 if I try to add the suggested extra deps like so extra-deps: - Cabal-1.24.2.0 - base-4.9.1.0 - cabal-helper-0.7.3.0 - extra-1.5.3 - haskell-src-exts-1.19.1 - hlint-2.0.15 - monad-journal-0.7.2 - optparse-applicative-0.13.2.0 - process-1.4.3.0 - either-4.4.1.1 - free-4.12.4 I end up having a loop like this Error: While constructing the build plan, the following exceptions were encountered: In the dependencies for ghc-mod-5.8.0.0: base-4.10.1.0 from stack configuration does not match >=4.6.0.1 && <4.10 (latest matching version is 4.9.1.0) ghc-8.2.2 from stack configuration does not match >=7.6 && <8.2 needed since ghc-mod is a build target. In the dependencies for haskell-src-exts-util-0.2.3: haskell-src-exts-1.19.1 from stack configuration does not match >=1.20.0 (latest matching version is 1.20.2) needed due to ghc-mod-5.8.0.0 -> haskell-src-exts-util-0.2.3 In the dependencies for hlint-2.0.15: haskell-src-exts-1.19.1 from stack configuration does not match >=1.20 && <1.21 (latest matching version is 1.20.2) needed due to ghc-mod-5.8.0.0 -> hlint-2.0.15 Some different approaches to resolving this: * Set 'allow-newer: true' to ignore all version constraints and build anyway. * Consider trying 'stack solver', which uses the cabal-install solver to attempt to find some working build configuration. This can be convenient when dealing with many complicated constraint errors, but results may be unpredictable. * Recommended action: try adding the following to your extra-deps in /Users/mo/.stack/global-project/stack.yaml: - base-4.9.1.0 - haskell-src-exts-1.20.2 if i put - haskell-src-exts-1.20.2 they ask me for - haskell-src-exts-1.19.1 back and vice versa I can't figure out what to do about this dependency conflict, and also I tried to run stack resolver but it doesn't get me anywhere
The issue is that ghc-mod does not support newer versions of GHC, I believe the last supported version is GHC 8.0. You can try changing your Stack resolver to lts-8.24 or nightly-2017-06-28 (see the snapshots listed on ghc-mod's Stackage page).
Even easier, this worked for me: stack install ghc-mod --resolver lts-8.24
input command line: stack install ghc-mod --resolver lts-8.24 it really helps.
While constructing the build plan, the following exceptions were encountered
I am trying to install stack install ghc-mod and I've got the following error: In the dependencies for ghc-mod-5.8.0.0: Cabal-2.0.1.1 from stack configuration does not match >=1.18 && <1.25 (latest matching version is 1.24.2.0) base-4.10.1.0 from stack configuration does not match >=4.6.0.1 && <4.10 (latest matching version is 4.9.1.0) cabal-helper must match <0.8 && >=0.7.3.0, but the stack configuration has no specified version (latest matching version is 0.7.3.0) extra-1.6.2 from stack configuration does not match <1.6 && >=1.4 (latest matching version is 1.5.3) ghc-8.2.2 from stack configuration does not match >=7.6 && <8.2 monad-journal-0.8.1 from stack configuration does not match <0.8 && >=0.4 (latest matching version is 0.7.2) optparse-applicative-0.14.0.0 from stack configuration does not match >=0.13.0.0 && <0.14 (latest matching version is 0.13.2.0) needed since ghc-mod is a build target. Some potential ways to resolve this: * Recommended action: try adding the following to your extra-deps in /home/developer/.stack/global-project/stack.yaml: - Cabal-1.24.2.0 - base-4.9.1.0 - cabal-helper-0.7.3.0 - extra-1.5.3 - monad-journal-0.7.2 - optparse-applicative-0.13.2.0 * Set 'allow-newer: true' to ignore all version constraints and build anyway. * You may also want to try using the 'stack solver' command. Plan construction failed. I am using ~/.local/bin$ stack --version Version 1.6.3, Git revision b27e629b8c4ce369e3b8273f04db193b060000db (5454 commits) x86_64 hpack-0.20.0 and ghc version 8.2.2. How to bypass the error?
Your version of stackage does not have that package https://www.stackage.org/lts-10.4/hoogle?q=ghc-mod . The old one has it https://www.stackage.org/lts-8.23/hoogle?q=ghc-mod . I guess package is considered unmaintained as it was last updated in July 2017. You can read official documentation on how to add any package from hackage, particular section External Dependencies https://github.com/commercialhaskell/stack/blob/master/doc/GUIDE.md#external-dependencies However, things might be broken with latest Haskell version.
For lts-10.4 you might use a workaround mentioned here at the very bottom: Install a release candidate for ghc-mod-5.9.0.0 and some more packages in stack.yaml under extra-deps. Then do a stack build ghc-mod stack install ghc-mod and you're done. At least "works for me" under ghc-8.2.2: ghc-mod --version $> ghc-mod version 5.9.0.0 compiled by GHC 8.2.2 I have not encountered any problems using it with atom yet. Hope this helps.
Fail with basic usage of haskell stack
I'm learning Haskell and trying to setup my Emacs development environment (reading this).
One of things I should do is to install hindent.
Recommended method here is just stack install hindent. I guess it should be installed in stack's global-project space. My global stack yaml at $HOME/.stack/global-project/stack.yaml is:
flags: {}
extra-package-dbs: []
packages: []
extra-deps: []
resolver: ghc-7.10.3
I don't use any system ghc (there is no ghc or ghci on my $PATH).
On stack install hindent it adviced me to extend extra-deps:
Run from outside a project, using implicit global project config
Using resolver: ghc-7.10.3 from implicit global project's config file: /home/me/.stack/global-project/stack.yaml
While constructing the build plan, the following exceptions were encountered:
In the dependencies for hindent-5.2.1:
descriptive must match >=0.7 && <0.10, but the stack configuration has no specified version
(latest applicable is 0.9.4)
exceptions must match -any, but the stack configuration has no specified version (latest applicable is 0.8.3)
haskell-src-exts must match >=1.18, but the stack configuration has no specified version
(latest applicable is 1.18.2)
monad-loops must match -any, but the stack configuration has no specified version (latest applicable is 0.4.3)
mtl must match -any, but the stack configuration has no specified version (latest applicable is 2.2.1)
path must match -any, but the stack configuration has no specified version (latest applicable is 0.5.9)
path-io must match -any, but the stack configuration has no specified version (latest applicable is 1.2.0)
text must match -any, but the stack configuration has no specified version (latest applicable is 1.2.2.1)
unix-compat must match -any, but the stack configuration has no specified version (latest applicable is 0.4.2.0)
utf8-string must match -any, but the stack configuration has no specified version (latest applicable is 1.0.1.1)
yaml must match -any, but the stack configuration has no specified version (latest applicable is 0.8.20)
Recommended action: try adding the following to your extra-deps in /home/me/.stack/global-project/stack.yaml:
- descriptive-0.9.4
- exceptions-0.8.3
- haskell-src-exts-1.18.2
- monad-loops-0.4.3
- mtl-2.2.1
- path-0.5.9
- path-io-1.2.0
- text-1.2.2.1
- unix-compat-0.4.2.0
- utf8-string-1.0.1.1
- yaml-0.8.20
When I do what is proposed it suggests some new dependencies (which are probably dependencies of those which are added before) etc. At the end it results in situatuation where some two dependencies have unmet versions.
I presume that something is wrong with my configuration (or understanding of stack) since I think that obtaining implicit dependencies is job of a build tool.
Does someone more experienced can infer what is my beginner fault?
It's not generally recommended to use a ghc version as a resolver, for the reason you've discovered: you need to manually specify lots of package versions. Instead, I'd recommend switching to lts-6.23, or something else similar.
Not sure. If you just wanna get moving fast: stack upgrade --git && \ rm -rf ~/.stack && \ stack setup && \ stack install hindent Why not use GHC 8.X and a fresh new Stack? ;)