I am new to Haskell and I am using cabal for a small project. The project is managed on github and it works fine if I run cabal run on the current code. There are also no errors if I enter ghci *.hs However, if I make any changes to the code at all, the following is printed to the terminal. What might be the issue here?
C:\Users\65963\scripting-hs> cabal run
Resolving dependencies...
Build profile: -w ghc-8.10.3 -O1
In order, the following will be built (use -v for more details):
- scripting-hs-0.1.0.0 (exe:scripting-hs) (configuration changed)
Configuring executable 'scripting-hs' for scripting-hs-0.1.0.0..
Preprocessing executable 'scripting-hs' for scripting-hs-0.1.0.0..
Building executable 'scripting-hs' for scripting-hs-0.1.0.0..
Linking C:\Users\65963\scripting-hs\dist-newstyle\build\x86_64-windows\ghc-8.10.3\scripting-hs-0.1.0.0\x\scripting-hs\build\scripting-hs\scripting-hs.exe ...
C://ProgramData//chocolatey//lib//ghc//tools//ghc-8.10.3//mingw//bin/ld.exe: cannot open output file C:\Users\65963\CS Projects\St Andrews CS\CS2006\CS2006-Haskell2\scripting-hs\dist-newstyle\build\x86_64-windows\ghc-8.10.3\scripting-hs-0.1.0.0\x\scripting-hs\build\scripting-hs\scripting-hs.exe: Invalid argument
collect2.exe: error: ld returned 1 exit status
`gcc.exe' failed in phase `Linker'. (Exit code: 1)
I followed the instructions here http://www.euterpea.com for installing Euterpea (a domain-specific language for computer music applications embedded in Haskell), and I received a message that certain packages and things failed to install (see the code below). How can I install the remaining packages?
Mo-MacBook-Pro:~ Mo$ cabal update
Downloading the latest package list from hackage.haskell.org
cabal install Euterpea
To revert to previous state run:
cabal update --index-state='2018-06-25T08:34:14Z'
Mo-MacBook-Pro:~ Mo$ cabal install Euterpea
clang: warning: argument unused during compilation: '-nopie' [-Wunused-
command-line-argument]
Resolving dependencies...
Downloading heap-1.0.4...
Downloading PortMidi-0.1.6.1...
Configuring PortMidi-0.1.6.1...
Downloading lazysmallcheck-0.6...
Configuring heap-1.0.4...
Downloading semigroups-0.18.5...
Configuring lazysmallcheck-0.6...
Configuring semigroups-0.18.5...
Building heap-1.0.4...
Building PortMidi-0.1.6.1...
Building lazysmallcheck-0.6...
Building semigroups-0.18.5...
Installed semigroups-0.18.5
Downloading stm-2.5.0.0...
Configuring stm-2.5.0.0...
Installed lazysmallcheck-0.6
Downloading HCodecs-0.5.1...
Installed heap-1.0.4
Downloading Stream-0.4.7.2...
Configuring HCodecs-0.5.1...
Configuring Stream-0.4.7.2...
Building stm-2.5.0.0...
Building HCodecs-0.5.1...
Building Stream-0.4.7.2...
Failed to install HCodecs-0.5.1
Build log ( /Users/Mo/.cabal/logs/ghc-8.4.3/HCodecs-0.5.1-
BtnY8oBJJ5FGnsoQaqbvOm.log ):
cabal: Entering directory
'/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-
5294/HCodecs-0.5.1'
Configuring HCodecs-0.5.1...
clang: warning: argument unused during compilation: '-nopie' [-Wunused-
command-line-argument]
Preprocessing library for HCodecs-0.5.1..
Building library for HCodecs-0.5.1..
<command line>: cannot satisfy -package-id random-1.1-
7T1TXpwb46H1j0av1OnVaD
(use -v for more information)
cabal: Leaving directory
'/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-
5294/HCodecs-0.5.1'
Failed to install Stream-0.4.7.2
Build log ( /Users/Mo/.cabal/logs/ghc-8.4.3/Stream-0.4.7.2-
ES6rey5IgWg9tsXDghlP7Y.log ):
cabal: Entering directory
'/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-
5295/Stream-0.4.7.2'
Warning: Stream.cabal:6:4: Tabs used as indentation at 6:4, 12:4, 13:4,
14:4,
15:4, 16:4, 17:4
Configuring Stream-0.4.7.2...
clang: warning: argument unused during compilation: '-nopie' [-Wunused-
command-line-argument]
Preprocessing library for Stream-0.4.7.2..
Building library for Stream-0.4.7.2..
<command line>: cannot satisfy -package-id QuickCheck-2.11.3-
4Q6LQ7mN6Tj8otrLuHN0se
(use -v for more information)
cabal: Leaving directory
'/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-
5295/Stream-0.4.7.2'
Installed PortMidi-0.1.6.1
Installed stm-2.5.0.0
cabal: Error: some packages failed to install:
Euterpea-2.0.6-LLo28S848YneLemh6QUkK depends on Euterpea-2.0.6 which
failed to
install.
HCodecs-0.5.1-BtnY8oBJJ5FGnsoQaqbvOm failed during the building phase.
The
exception was:
ExitFailure 1
Stream-0.4.7.2-ES6rey5IgWg9tsXDghlP7Y failed during the building phase.
The
exception was:
ExitFailure 1
arrows-0.4.4.2-GLke2GgDEro6Tzj3MGmTOB depends on arrows-0.4.4.2 which
failed
to install.
It would be great if someone could help. Thanks.
I have included all the code, lest some particular relevant detail was omitted.
Edit
I have also tried to install Euterpea via stack. I get this message:
Mo-MacBook-Pro:~ Mo$ stack install Euterpea
Error: While constructing the build plan, the following exceptions were
encountered:
In the dependencies for Euterpea-2.0.6:
PortMidi must match ==0.1.6.1, but the stack configuration has no specified version (latest matching version is 0.1.6.1)
arrows must match >=0.4 && <0.5, but the stack configuration has no specified version (latest matching version is 0.4.4.2)
needed since Euterpea 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:
- PortMidi-0.1.6.1
- arrows-0.4.4.2
Plan construction failed.
--
Edit 2.
As suggested below, I tried cabal install random-1.1 --force-reinstalls which generated:
clang: warning: argument unused during compilation: '-nopie' [- Wunused-command-line-argument]
Resolving dependencies...
Warning: The following packages are likely to be broken by the reinstalls:
tf-random-0.5
QuickCheck-2.11.3
Continuing even though the plan contains dangerous reinstalls.
Configuring random-1.1...
Building random-1.1...
Installed random-1.1
Then
Mo-MacBook-Pro:~ Mo$ cabal install Euterpea
clang: warning: argument unused during compilation: '-nopie' [- Wunused-command-line-argument]
Resolving dependencies...
Configuring Stream-0.4.7.2...
Configuring HCodecs-0.5.1...
Building HCodecs-0.5.1...
Building Stream-0.4.7.2...
Failed to install HCodecs-0.5.1
Build log ( /Users/lukeburke/.cabal/logs/ghc-8.4.3/HCodecs-0.5.1- BtnY8oBJJ5FGnsoQaqbvOm.log ):
cabal: Entering directory '/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-20742/HCodecs- 0.5.1'
Configuring HCodecs-0.5.1...
clang: warning: argument unused during compilation: '-nopie' [- Wunused-command-line-argument]
Preprocessing library for HCodecs-0.5.1..
Building library for HCodecs-0.5.1..
<command line>: cannot satisfy -package-id random-1.1- 7T1TXpwb46H1j0av1OnVaD
(use -v for more information)
cabal: Leaving directory '/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-20742/HCodecs- 0.5.1'
Failed to install Stream-0.4.7.2
Build log ( /Users/Mo/.cabal/logs/ghc-8.4.3/Stream-0.4.7.2- ES6rey5IgWg9tsXDghlP7Y.log ):
cabal: Entering directory '/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-20743/Stream- 0.4.7.2'
Warning: Stream.cabal:6:4: Tabs used as indentation at 6:4, 12:4, 13:4, 14:4,
15:4, 16:4, 17:4
Configuring Stream-0.4.7.2...
clang: warning: argument unused during compilation: '-nopie' [- Wunused-command-line-argument]
Preprocessing library for Stream-0.4.7.2..
Building library for Stream-0.4.7.2..
<command line>: cannot satisfy -package-id QuickCheck-2.11.3- 4Q6LQ7mN6Tj8otrLuHN0se
(use -v for more information)
cabal: Leaving directory '/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-20743/Stream- 0.4.7.2'
cabal: Error: some packages failed to install:
Euterpea-2.0.6-LLo28S848YneLemh6QUkK depends on Euterpea-2.0.6 which failed to
install.
HCodecs-0.5.1-BtnY8oBJJ5FGnsoQaqbvOm failed during the building phase. The
exception was:
ExitFailure 1
Stream-0.4.7.2-ES6rey5IgWg9tsXDghlP7Y failed during the building phase. The
exception was:
ExitFailure 1
arrows-0.4.4.2-GLke2GgDEro6Tzj3MGmTOB depends on arrows-0.4.4.2 which failed
to install.
Edit 3
It has been suggested below that multiple packages are botched and that I should try re-installing all of them (in a single command, i.e. cabal install random tf-random QuickCheck Euterpea --force-reinstalls.
However, if I write cabal install random tf-random QuickCheck Euterpea --force-reinstalls I receive the following code:
clang: warning: argument unused during compilation: '-nopie' [- Wunused-command-line-argument]
Resolving dependencies...
Warning: The following packages are likely to be broken by the reinstalls:
QuickCheck-2.11.3
Continuing even though the plan contains dangerous reinstalls.
Downloading erf-2.0.0.0...
Configuring random-1.1...
Configuring erf-2.0.0.0...
Building random-1.1...
Building erf-2.0.0.0...
Installed erf-2.0.0.0
Installed random-1.1
Downloading tf-random-0.5...
Configuring tf-random-0.5...
Building tf-random-0.5...
Failed to install tf-random-0.5
Build log ( /Users/Mo/.cabal/logs/ghc-8.4.3/tf-random-0.5- ADZoyzEXgHe6hyR0Bycce0.log ):
cabal: Entering directory '/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-21584/tf- random-0.5'
Configuring tf-random-0.5...
clang: warning: argument unused during compilation: '-nopie' [- Wunused-command-line-argument]
Preprocessing library for tf-random-0.5..
Building library for tf-random-0.5..
<command line>: cannot satisfy -package-id primitive-0.6.4.0- 9k41Y6ToOAE8KXK6VMGV2O
(use -v for more information)
cabal: Leaving directory '/var/folders/dy/q51p3v595kbd8_wclmt80v700000gn/T/cabal-tmp-21584/tf- random-0.5'
cabal: Error: some packages failed to install:
Euterpea-2.0.6-87WYqltNL8w8teqXOsc4TL depends on Euterpea-2.0.6 which failed
to install.
HCodecs-0.5.1-DrGKEnNk6EBHti2goL6KP5 depends on HCodecs-0.5.1 which. failed to
install.
QuickCheck-2.12.6.1-KuXpgimNOXzF2SmGPEs5LR depends on QuickCheck- 2.12.6.1
which failed to install.
Stream-0.4.7.2-FedzVSwUnWMDxlzmPNWt7x depends on Stream-0.4.7.2 which failed
to install.
arrows-0.4.4.2-EGvZPpby4BcD99TcXDoCg4 depends on arrows-0.4.4.2 which. failed
to install.
tf-random-0.5-ADZoyzEXgHe6hyR0Bycce0 failed during the building phase. The
exception was:
ExitFailure 1
What can I do to install Euterpea?
Installing the Euterpea package
This answer uses LTS 12.26 as I've verified it works, but this should work for most LTS releases (see bottom of step 2 for details).
Make a new Stack project:
stack new euter-test
cd euter-test
Edit stack.yaml and set the LTS to 12.26 and extra-deps to specify the versions of packages that aren't present in the LTS but are present on Hackage:
resolver: lts-12.26
...
extra-deps:
- Euterpea-2.0.6
- PortMidi-0.1.6.1
- arrows-0.4.4.2
- Stream-0.4.7.2
- lazysmallcheck-0.6
The errors you were getting on the Stack install ("PortMidi must match ==0.1.6.1, but the stack configuration has no specified version") indicate that a package you're using requires a particular version of a library, but the package repository (LTS snapshot) doesn't contain that library, so you need to specify it explicitly. Stack then prints which library and version is missing, so you can just keep trying stack build and adding the libraries until the build succeeds.
We use LTS 12.26 here, but by adding the extra-deps packages as described above, you should be able to get it working on any LTS.
Edit package.yaml and add Euterpea to the list of dependencies:
dependencies:
...
- Euterpea
A simple test in app/Main.hs:
module Main where
import Euterpea
main :: IO ()
main = play $ c 4 qn
Run stack build:
lazysmallcheck-0.6: download
heap-1.0.4: download
heap-1.0.4: configure
HCodecs-0.5.1: download
PortMidi-0.1.6.1: download
heap-1.0.4: build
lazysmallcheck-0.6: configure
lazysmallcheck-0.6: build
HCodecs-0.5.1: configure
HCodecs-0.5.1: build
PortMidi-0.1.6.1: configure
heap-1.0.4: copy/register
lazysmallcheck-0.6: copy/register
PortMidi-0.1.6.1: build
Stream-0.4.7.2: download
Stream-0.4.7.2: configure
Stream-0.4.7.2: build
Stream-0.4.7.2: copy/register
PortMidi-0.1.6.1: copy/register
arrows-0.4.4.2: download
arrows-0.4.4.2: configure
arrows-0.4.4.2: build
arrows-0.4.4.2: copy/register
HCodecs-0.5.1: copy/register
Euterpea-2.0.6: download
Euterpea-2.0.6: configure
Euterpea-2.0.6: build
Euterpea-2.0.6: copy/register
Building all executables for `euter' once. After a successful build of all of them, only specified executables will be rebuilt.
euter-0.1.0.0: configure (lib + exe)
Configuring euter-0.1.0.0...
euter-0.1.0.0: build (lib + exe)
Preprocessing library for euter-0.1.0.0..
Building library for euter-0.1.0.0..
[1 of 2] Compiling Lib ( src/Lib.hs, .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/Lib.o )
[2 of 2] Compiling Paths_euter ( .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/autogen/Paths_euter.hs, .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/Paths_euter.o )
Preprocessing executable 'euter-exe' for euter-0.1.0.0..
Building executable 'euter-exe' for euter-0.1.0.0..
[1 of 2] Compiling Main ( app/Main.hs, .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/euter-exe/euter-exe-tmp/Main.o )
[2 of 2] Compiling Paths_euter ( .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/euter-exe/autogen/Paths_euter.hs, .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/euter-exe/euter-exe-tmp/Paths_euter.o )
Linking .stack-work/dist/x86_64-linux/Cabal-2.2.0.1/build/euter-exe/euter-exe ...
euter-0.1.0.0: copy/register
Installing library in <...>
Installing executable euter-exe in <...>
Registering library for euter-0.1.0.0..
Running the executable produced by the project should emit a tone if you're running a MIDI synthesiser:
stack exec euter-test-exe
Troubleshooting
If you get an error like *** Exception: No MIDI outputs!, then you're not running a MIDI synthesiser (see below). Make sure you run it in the background (eg. in another terminal).
If you don't get an error but there's no audio output, try running devices in GHCI to see what outputs are available, and then use playDev x instead of play, where x is the OutputDeviceID of the synth input port. Eg:
> devices
Input devices:
InputDeviceID 1 Midi Through Port-0
Output devices:
OutputDeviceID 0 Midi Through Port-0
OutputDeviceID 2 Synth input port (25952:0)
> playDev 2 $ c 4 qn
If you run devices and don't see any synth input ports, but you have fluidsynth running in the background, then you might need to restart ghci and try again.
Running a MIDI synthesiser
Here's a quick step-by-step to get Fluidsynth running on Debian (with guesses at a Mac setup along the way).
Install fluidsynth:
On Debian this is sudo apt install fluidsynth, on mac it could be brew install fluidsynth - there's quite a few articles on how to do this, just google it if in doubt.
Run fluidsynth:
On Debian using ALSA this is
fluidsynth -s -a alsa -m alsa_seq /usr/share/sounds/sf2/FluidR3_GM.sf2
Instructing fluidsynth to run in server mode, use alsa as the audio driver and alsa_seq as the MIDI driver, and use the soundfont FluidR3_GM.sf2 (should be installed as part of the fluidsynth install).
On Mac, it seems like the correct commandline is:
fluidsynth -s -a coreaudio -m coremidi /usr/share/sounds/sf2/FluidR3_GM.sf2
If you can't find the FluidR3_GM.sf2 file then it's likely it's been installed in a different location. As a last resort, you can just download a soundfont file and use that rather than the one provided by FluidSynth.
After running this, you should be given a prompt and maybe a few warnings, and fluidsynth will be running. Make sure it's running before using Euterpea, and keep it running while using Euterpea.
I'm trying to use a Heroku Postgres database on my Yesod application in a c9 workspace, but the following error message appears when the stack build command is running:
$ stack build
projeto-0.0.0: build (lib + exe)
Preprocessing library projeto-0.0.0...
[ 9 of 15] Compiling Handler.Cliente ( src/Handler/Cliente.hs, .stack-work/dist/x86_64-linux/Cabal-1.24.2.0/build/Handler/Cliente.o )
/home/ubuntu/workspace/projeto/src/Handler/Cliente.hs:11:1: error:
Failed to load interface for ‘Database.Persist.Postgresql’
Use -v to see a list of the files searched for.
-- While building package projeto-0.0.0 using:
/home/ubuntu/.stack/setup-exe-cache/x86_64-linux/Cabal-simple_mPHDZzAJ_1.24.2.0_ghc-8.0.2 --builddir=.stack-work/dist/x86_64-linux/Cabal-1.24.2.0 build lib:projeto exe:projeto --ghc-options " -ddump-hi -ddump-to-file"
Process exited with code: ExitFailure 1
What I should do?
I am currently trying to use CmdArgs and I am running into some trouble.
The code is here on github and the error I am getting is this:
$ stack build
gc2-0.1.0.0: configure (lib + exe) Configuring
gc2-0.1.0.0... gc2-0.1.0.0: build (lib + exe) Preprocessing library
gc2-0.1.0.0... Preprocessing executable 'gc2-exe' for gc2-0.1.0.0...
[1 of 1] Compiling Main ( app/Main.hs,
.stack-work/dist/x86_64-linux-nopie/Cabal-1.24.2.0/build/gc2-exe/gc2-exe-tmp/Main.o )
/home/kuwze/src/haskell/gc2/app/Main.hs:6:1: error:
Failed to load interface for ‘CmdArgs’
Use -v to see a list of the files searched for.
-- While building package gc2-0.1.0.0 using:
/home/kuwze/.stack/setup-exe-cache/x86_64-linux-nopie/Cabal-simple_mPHDZzAJ_1.24.2.0_ghc-8.0.2 --builddir=.stack-work/dist/x86_64-linux-nopie/Cabal-1.24.2.0 build lib:gc2 exe:gc2-exe --ghc-options " -ddump-hi -ddump-to-file"
Process exited with code: ExitFailure 1
Any help would be greatly appreciated.
It turns out like usual I am an idiot.
The correct thing to do is to check the full path of a library; for my example the page for CmdArgs specifies that the library path for the module is System.Console.CmdArgs.
I followed "Yesod quick start guide" to install Yesod in Windows 10.
But, when I issued the stack build command, it failed.
Environment
Windows 10 (64bits)
stack-0.1.5 (for Windows10 64bits)
No Haskell Platform
I executed these commands
stack new my-project yesod-sqlite && cd my-project
stack install yesod-bin cabal-install --install-ghc
stack setup
stack build <--- the error occured
In 'stack build' command, the package installations were done. But, when it build the project, the error occured.
Command Prompt
>stack build
Setting codepage to UTF-8 (65001) to ensure correct output from GHC
my-project-0.0.0: build
Preprocessing library my-project-0.0.0...
In-place registering my-project-0.0.0...
Preprocessing executable 'my-project' for my-project-0.0.0...
Linking .stack-work\dist\x86_64-windows\Cabal-1.22.4.0\build\my-project\my-project.exe ...
ghc.exe: could not execute: C:\Users\xxxxx\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.2\lib/../mingw/bin/gcc.exe
-- While building package my-project-0.0.0 using:
C:\Users\xxxxx\AppData\Roaming\local\bin\stack-0.1.5.0\setup-exe-cache\setup-Simple-Cabal-1.22.4.0-x86_64-windows-ghc-7.10.2.exe --builddir=.stack-work\dist\x86_64-windows\Cabal-1.22.4.0\ build lib:my-project exe:my-project --ghc-options -ddump-hi -ddump-to-file
Process exited with code: ExitFailure 1
This is caused by the argument length limit on Windows. Starting in GHC 7.10.3, GHC will support response files for sending linker arguments in order to bypass this limitation. In the meanwhile, a workaround is to manually make the path to your stack root shorter by setting the STACK_ROOT environment variable.
For more information, see https://www.fpcomplete.com/blog/2015/08/stack-ghc-windows