stack build [target] no longer works, builds all targets #3229

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1. snoyberg commented on Jun 27, 2017

   

   snoyberg

   on Jun 27, 2017

   Contributor

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   Let's finally set to rest the theory that it's the switch from install to copy/register (it's not):

   stack new foo
   cd foo
   stack exec --no-ghc-package-path -- runghc Setup.hs configure --user
   stack exec --no-ghc-package-path -- runghc Setup.hs build lib:foo
   stack exec --no-ghc-package-path -- runghc Setup.hs install
   

   Results in:

   Installing library in
   /Users/michael/.cabal/lib/x86_64-osx-ghc-8.0.2/foo-0.1.0.0-K7FRl2SdaSPJF1E2Gf1Eav
   Installing executable(s) in /Users/michael/.cabal/bin
   Warning: The directory /Users/michael/.cabal/bin is not in the system search
   path.
   dist/build/foo-exe/foo-exe: copyFile: does not exist (No such file or
   directory)
   
2. snoyberg commented on Jun 27, 2017

   

   snoyberg

   on Jun 27, 2017

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   The problem: Cabal (the library) will fail and die if you call the copy command when some of the executables are unavailable.

   Original solution: oh well, user will get an error message, realize he/she has to call build once without arguments, and then can give components.

   Current solution: never tell build to only build a subset of components, since that can lead to copy failing.

   Proposed solution: before calling Cabal build, Stack should check if all executables are built. If they are, pass in components. Otherwise, give a logInfo that we're building all components once, and then future calls will build individual components.
3. chrisdone

   self-assigned this

   on Jun 28, 2017
4. chrisdone

   added

   component: build

   in-progress

   type: bug

   on Jun 28, 2017
5. chrisdone commented on Jun 28, 2017

   

   chrisdone

   on Jun 28, 2017

   Member

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   Found the related commit: dc6313f
6. chrisdone

   added 5 commits that reference this issue on Jun 28, 2017

   WIP: Build all exes once; then only specified (#3229)

   660b732

   Build all exes once; then only specified (#3229)

   d93337f

   Build all exes once; then only specified (#3229)

   176d532

   Build all exes once; then only specified (#3229)

   d9d8ec2

   Include package name in exes message (#3229)

   d4e6552
7. snoyberg commented on Jul 13, 2017

   

   snoyberg

   on Jul 13, 2017

   Contributor

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   Merged to master, closing.
8. snoyberg

   closed this as completedon Jul 13, 2017