[Haskell-cafe] ghc/cabal problems - mystery?

[Gregory Guthrie]

I reported several odd and inconsistent results that I can't understand, and after some further trials, a few more data points, but still confused. 

A directory of files, cabal build runs fine, then trying to execute; I get three different results;

     Linking D:\CS\Courses\long path\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl\apl.exe ...
Seems fine.

Then; from that same shell (PS) in the same directory -
>From cabal run: Fails
    PS D:\CS\Courses\long path\All Solutions> cabal run
    Up to date
    D:\CS\Courses\long path\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl\apl: createProcess: invalid argument (Invalid argument)

>From using the explicit path: Fails
    PS D:\CS\Courses\long path\All Solutions> dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl\apl.exe
    Program 'apl.exe' failed to run: The application has failed to start because its side-by-side configuration
    is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more
    detailAt line:1 char:1
    + dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl\apl ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~.
    At line:1 char:1
    + dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl\apl ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ResourceUnavailable: (:) [], ApplicationFailedException
    + FullyQualifiedErrorId : NativeCommandFailed

>From going to the dist folder: runs fine.
   PS D:\CS\Courses\long path\All Solutions> cd dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl
   PS D:\CS\Courses\long path\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl> apl.exe
   "APL: Examples and labs"

I get a few other errors & results sometimes; copy the full directory to somewhere else, "cabal clean",
And it won't build, "no target specified", even though the entire folder is identical.

Again; every time just copying the entire directory, no editing of any files, just running cabal as above.
Any hints or ideas why I am getting these issues & errors?

GHC 8.10.2
Cabal 3.2.0.0
(Windows 10)
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PS: One more...
I (again) copied the entire directory to another place and retested, in that case "cabal run" did run, but gave results from a different file in the directory (multiple tests there, only one run from Main.hs, same .cabal file), and can run it by explicit path or "cabal run".

All results should be "DSem_imp", one is from a different file, "DSem_impc" ??
Certainly looks like they should all be running the same apl.exe. ??

Output""
PS G:\Testing\All Solutions> cabal clean
PS G:\Testing\All Solutions> cabal run
Resolving dependencies...
Build profile: -w ghc-8.10.2 -O1
In order, the following will be built (use -v for more details):
 - apl-0.0.1 (exe:apl) (first run)
Configuring apl-0.0.1...
Preprocessing executable 'apl' for apl-0.0.1..
Building executable 'apl' for apl-0.0.1..
...
Linking G:\Testing\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.2\apl-0.0.1\build\apl\apl.exe ...
"APL: Examples and labs"
"======================"
"------ APL:: DSem_imp"

PS G:\Testing\All Solutions> dist-newstyle\build\x86_64-windows\ghc-8.10.2\apl-0.0.1\build\apl\apl.exe
"APL: Examples and labs"
"======================"
"------ APL:: DSem_imp"

PS G:\Testing\All Solutions> cd dist-newstyle\build\x86_64-windows\ghc-8.10.2\apl-0.0.1\build\apl
PS G:\Testing\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.2\apl-0.0.1\build\apl> ls
    Directory: G:\Testing\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.2\apl-0.0.1\build\apl
Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        12/30/2020  12:18 PM                apl-tmp
d-----        12/30/2020  12:17 PM                autogen
-a----        12/30/2020  12:18 PM       11230184 apl.exe
PS G:\Testing\All Solutions\dist-newstyle\build\x86_64-windows\ghc-8.10.2\apl-0.0.1\build\apl> apl.exe
"APL: Examples and labs"
"======================"
"------ APL:: DSem_impc"



Gregory Guthrie
Maharishi International University
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