I just installed Stack using
curl -sSL https://get.haskellstack.org/ | sh
The install went fine but when trying to install Intero using Stack it fails
ffriis#BNEC02QR6Y0G8WN ~> stack install hlint intero
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for intero-0.1.32:
ghc-8.4.4 from stack configuration does not match >=7.8 && <=8.4.3 (latest matching version is 8.4.3)
needed since intero is a build target.
Some different approaches to resolving this:
* Set 'allow-newer: true' in /Users/ffriis/.stack/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 /Users/ffriis/.stack/global-project/stack.yaml:
ghc-8.4.3#sha256:07ee8fb5dab414c35f93d5d5afc1ecaa65a49c409346e5063436cc8b838cd754
Plan construction failed.
I've edited the file as instructed but I'm still getting the same error. What is the best way to resolve the problem?
Currently intero supports GHC 8.4.3, but stack is grabbing 8.4.4. Change your resolver to lts-12.14 in stack.yaml
Related
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).
I want to install the Haskell libary hip from https://hackage.haskell.org/package/hip by using stack. This does not work, because stack seems to not being able to install dependencies.
I have stack freshly installed by curl -sSL https://get.haskellstack.org/ | sh, and stack --version gives me
Version 1.9.3, Git revision 40cf7b37526b86d1676da82167ea8758a854953b (6211 commits) x86_64 hpack-0.31.1
I have tried several things like another resolver, reinstalling different versions of stack, ghc or cabal.
I have tried stack new test, and inside the test folder, i wrote stack install hip.
I got the following error:
Error: While constructing the build plan, the following exceptions were
encountered:
In the dependencies for hip-1.5.3.0:
Chart must match >=1.5, but the stack configuration has no specified
version (latest matching version is 1.9)
Chart-diagrams must match >=1.5, but the stack configuration has no
specified version (latest matching version is 1.9)
needed since hip 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 /home/jarek/Desktop/test/stack.yaml:
Chart-1.9#sha256:f41568b6b3704f66c2ec163295b430ab7d798f91de426c2d5aba747d1135cd9b
Chart-diagrams-1.9#sha256:cdd0c22d730e507f9644e690833096ee127302b5ff5e1571f6def419160a2642
Plan construction failed.
I expect something like:
Building dependencies...
Installing Chart-1.9
...
...
...
hip successfully installed.
Please tell me if i did not provide all infos necessary for you to help me with my problem.
Installing with the resolver lts-7.5 works.
Why not do what stack recommended?
Recommended action: try adding the following to your extra-deps
in /home/jarek/Desktop/test/stack.yaml:
Chart-1.9#sha256:f41568b6b3704f66c2ec163295b430ab7d798f91de426c2d5aba747d1135cd9b
Chart-diagrams-1.9#sha256:cdd0c22d730e507f9644e690833096ee127302b5ff5e1571f6def419160a
It's the easiest way to accomplish your goal.
Update: lts-10.10 is the most recent resolver to include hip. If you update your stack.yaml to use lts-10.10 and add hip in your .cabal file, you should be good to go.
I'm totally new in haskell, and trying to install hfmt using stack.
stack install hfmt
but it shows
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for hfmt-0.2.0:
hindent-4.6.4 must match ==5.* (latest applicable is 5.2.5)
hlint-1.9.35 must match ==2.* (latest applicable is 2.0.15)
stylish-haskell-0.6.1.0 must match ==0.8.* (latest applicable is 0.8.1.0)
needed for unknown reason - stack invariant violated.
So, I tried to re-install hindent , hlint and stylish-haskell again.
However I couldn't find any command - stack upgrade or stack update.. even I failed to remove these packages.
Could you help install/update these package?
With reports like this, it's best to include the output of stack --version to know what version of the tool you're using. Also, how you installed Stack can be useful information.
As for hfmt: there's no version of it present in a Stackage snapshot, which you can see here:
https://www.stackage.org/package/hfmt
On my machine, I was able to build successfully against LTS 10.3, using this command:
stack install hfmt-0.2.0 --resolver lts-10.3
I'm trying to set up Hakyll on a fresh Ubuntu 16.04 instance, but I can't seem to get the Stack-based setup instructions right.
Starting out with stack install hakyll, I get:
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for hakyll-4.9.3.0:
http-conduit-2.1.11 must match >=2.2 && <2.3 (latest applicable is 2.2.3)
Plan construction failed.
I got a similar error when tying to stack-install http-conduit-2.1.11, this time with:
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for http-conduit-2.2.3:
http-client-0.4.31.2 must match >=0.5 && <0.6 (latest applicable is 0.5.5)
http-client-tls-0.2.4.1 must match >=0.3 && <0.4 (latest applicable is 0.3.3.1)
Plan construction failed.
After resolving dependencies for this (also using Stack), I tried once again to stack install http-conduit-2.1.11, but I once again got the same dependency error.
The packages http-client-0.4.31.2 and http-client-tls-0.2.4.1 appear in my ~/.stack/precompiled/x86_64-linux/ghc-8.0.1/1.24.0.0/, which isn't explicitly in my $PATH, however that feels like an extremely hacky solution, and I haven't found any documentation recommending this approach.
How can I correctly install Hakyll on my machine?
Dependency management with stack is meant to be reproducible and declarative, that means that a stack project will only compile once all dependencies are recorded in the .cabal file(s) of the project and once the stack.yaml of the project defines versions for these dependencies either in the resolver or the extra-deps section.
Your confusion seems to stem from a misunderstanding of what stack install does. The command line help has this to say about it:
build Build the package(s) in this directory/configuration
install Shortcut for 'build --copy-bins'
...
--[no-]copy-bins Enable/disable copying binaries to the local-bin-path
(see 'stack path')
stack install does not save any dependencies.
So the proper way of making hakyll available as a dependency to your code is:
Create a proper stack project with stack init if you already have a Cabal package, or stack new if you don't.
Add hakyll to the library or executable build-depends in your .cabal file.
Attempt to stack build and follow the instructions in any error messages until all issues are resolved.
A simpler solution than #sjakobi's in this case was to specify a resolver as a command line option when starting a new Stack project:
stack install hakyll --resolver=5.11 --install-ghc
Steps to reproduce:
$ stack new profiling-test
$ cd profiling-test
$ stack build --profile
A new project is initialized with lts-7.2 and a default template. I get the error:
While constructing the BuildPlan the following exceptions were encountered:
-- While attempting to add dependency,
Could not find package base in known packages
-- Failure when adding dependencies:
base: needed (>=4.7 && <5), stack configuration has no specified version (latest applicable is 4.9.0.0)
needed for package profiling-test-0.1.0.0
Recommended action: try adding the following to your extra-deps in ~/profiling-test/stack.yaml
- base-4.9.0.0
You may also want to try the 'stack solver' command
If I just do stack build, it compiles fine without any errors.
I've added base-4.9.0.0 to extra-deps in stack.yaml, but I get the same error.
My stack version is:
$ stack --version
Version 1.1.3, Git revision 225df244ea346a8dc880ef911b002583486a92b2 x86_64 hpack-0.14.0
And I'm running Ubuntu 14.04 trusty.
Thanks in advance for any help!
Figured it out after finding https://github.com/commercialhaskell/stack/issues/1331.
Solution:
Instead of doing
$ stack build --profile
Do:
$ stack build --profile --no-system-ghc
And just add --no-system-ghc to everything. You might potentially need to do stack setup --no-system-ghc before everything too?
Alternatively, as suggested by the comments, you can add this to the stack.yaml for the project or for your global stack project.