Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://github.com/commercialhaskell/stack/issues/5978 below:

Watch mode reports the Show instance of ConstructPlanFailed, instead of a readable error · Issue #5978 · commercialhaskell/stack · GitHub

When using --file-watch, and the build plan cannot be constructed, Stack displays an internal error representation instead of a readable error message.

In an empty directory, create stack.yaml with no dependencies, e.g.

resolver: ghc-9.2.4
packages:
- .

Create a Cabal file referencing an unavailable package, e.g.

cabal-version: 1.12

name:           test
version:        0.1.0.0
synopsis:       Test
description:    Test
author:         Test
maintainer:     test@example.com
build-type:     Simple

executable main
  main-is: Main.hs
  hs-source-dirs:
      .
  build-depends:
      base >=4.7 && <5
    , microlens-platform
  default-language: Haskell2010

Run stack build --file-watch.

Readable error message, such as in the case of stack build without watch:

Error: [S-4804]
       Stack failed to construct a build plan.
       
       While constructing the build plan, Stack encountered the following errors:
       
       In the dependencies for test-0.1.0.0:
           microlens-platform needed, but the Stack configuration has no specified version (latest matching version is 0.4.3.3)
       needed since test is a build target.

Only an internal error representation shown:

ConstructPlanFailed [UnknownPackage (PackageName "microlens-platform"),DependencyPlanFailures (Package {packageName = PackageName "test", packageVersion = mkVersion [0,1,0,0], packageLicense = Left NONE, packageFiles = <GetPackageFiles>, packageDeps = fromList [(PackageName "base",DepValue {dvVersionRange = IntersectVersionRanges (OrLaterVersion (mkVersion [4,7])) (EarlierVersion (mkVersion [5])), dvType = AsLibrary}),(PackageName "microlens-platform",DepValue {dvVersionRange = OrLaterVersion (mkVersion [0]), dvType = AsLibrary})], packageUnknownTools = fromList [], packageAllDeps = fromList [PackageName "base",PackageName "microlens-platform"], packageGhcOptions = [], packageCabalConfigOpts = [], packageFlags = fromList [], packageDefaultFlags = fromList [], packageLibraries = NoLibraries, packageInternalLibraries = fromList [], packageTests = fromList [], packageBenchmarks = fromList [], packageExes = fromList ["main"], packageOpts = <GetPackageOpts>, packageHasExposedModules = False, packageBuildType = Simple, packageSetupDeps = Nothing, packageCabalSpec = CabalSpecV1_12}) (fromList [(PackageName "microlens-platform",(OrLaterVersion (mkVersion [0]),Just (mkVersion [0,4,3,3],8ef4c8d5b9e0948489aa0b0b6a90c3d0c52e768e4e1f0e3f87697f6abd5d88fd,2930),NotInBuildPlan))])] "/Users/akotlyarov/xaos/stack-construct-plan/stack.yaml" "/Users/akotlyarov/.stack/" (MonoidMap (fromList [(PackageName "base",(First {getFirst = Nothing},[(PackageIdentifier {pkgName = PackageName "test", pkgVersion = mkVersion [0,1,0,0]},IntersectVersionRanges (OrLaterVersion (mkVersion [4,7])) (EarlierVersion (mkVersion [5])))])),(PackageName "microlens-platform",(First {getFirst = Nothing},[(PackageIdentifier {pkgName = PackageName "test", pkgVersion = mkVersion [0,1,0,0]},OrLaterVersion (mkVersion [0]))]))])) (fromList [PackageName "test"]) (fromList [])
Type help for available commands. Press enter to force a rebuild.

stack --version
Version 2.9.3, Git revision 6cf638947a863f49857f9cfbf72a38a48b183e7e x86_64 hpack-0.35.1

• Official binary, downloaded via haskellstack.org or from Stack's repository

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4