Error when doing the up and running with Platform Installer

[vincentv1345]

My error states this: [ERROR] Command 'opam install ocaml-system.5.0.0 --yes -q --color=never --switch
/tmp/ocaml-platform-sandbox-2083eb --root /root/.opam' failed: exited with 31
I've followed the instructions step by step and my operating system is Windows not sure why this is happening. This occurs when I get to setting up sandbox after I run the command ocaml-platform. I am not sure if my switch is not setup correctly. If you could help me, please let me know.
Thanks,
Vincent

[panglesd]

Hello and thanks for the report!

Unfortunately, this tool is not well tested on Windows. It should work on "linux emulated systems" such as WSL(2) and (maybe) Cygwin-powered installation. I don't think it was tested on Diskuv.

Could you precise how you installed OCaml+opam on Windows?
Also, could you run ocaml-platform -vv and post the result here?

Thanks!

[vincentv1345]

So the way the steps that I took to install Ocaml on windows were:
I downloaded and ran this like it said on the website: Ocaml 4.14.0 with Git and Visual Studio compiler: setup-diskuv-ocaml-windows_x86_64-1.1.0.exe
Step 2: I ended up forgetting to make the switch on windows and I ended up doing this after I performed the setting up development tools step and the Up and running with platform installer. I did the following commands in order from top to bottom (in Ubunutu):
$ opam pin remove fiber omd stdune dyn ordering dot-merlin-reader yojson --no-action
$ opam install dune merlin ocaml-lsp-server odoc ocamlformat utop
$ sudo apt install build-essential bubblewrap unzip
$ bash < <(curl -sL https://ocaml.org/install-platform.sh)
$ ocaml-platform
Which didn't work and resulted in the first error that I posted. Then I returned to step 2 and attempted to make a directory which resulted me getting an error saying that after I did dkml init it said The compiler switch C:\Users\vince\Desktop\ocamlProject does not exist. and it installed new switch packages. After that I ran the Ocaml-platform command again which resulted in the same error.

After I ran ocaml-platorm -vv the following error occurder
Error:
[WARNING] Running as root is not recommended
[ERROR] The compilation of ocaml-system.5.0.0 failed at "ocaml gen_ocaml_config.ml".

#=== ERROR while compiling ocaml-system.5.0.0 =================================#

context 2.1.4 | linux/x86_64 | | file:///tmp/ocaml-platform-compiler-package-5c11e7

path /tmp/ocaml-platform-sandbox-5005d3/_opam/.opam-switch/build/ocaml-system.5.0.0

command ~/.opam/opam-init/hooks/sandbox.sh build ocaml gen_ocaml_config.ml

exit-code 1

env-file ~/.opam/log/ocaml-system-13829-b015c6.env

output-file ~/.opam/log/ocaml-system-13829-b015c6.out

output

bwrap: execvp ocaml: No such file or directory

The former state can be restored with:
/usr/local/bin/opam switch import "/tmp/ocaml-platform-sandbox-5005d3/_opam/.opam-switch/backup/state-20230329084701.export"
ocaml-platform: [DEBUG] Running: 'opam' 'repository' 'remove' '--all-switches' 'platform_sandbox_compiler_packages-810877906' '--yes' '-q' '--color=never' '--switch' '/tmp/ocaml-platform-sandbox-5005d3' '--root' '/root/.opam'
ocaml-platform: [INFO] Error in 'opam' 'repository' 'remove' '--all-switches' 'platform_sandbox_compiler_packages-810877906' '--yes' '-q' '--color=never' '--switch' '/tmp/ocaml-platform-sandbox-5005d3' '--root' '/root/.opam':
[WARNING] Running as root is not recommended
ocaml-platform: [DEBUG] Running: 'opam' 'switch' 'remove' '/tmp/ocaml-platform-sandbox-5005d3' '--yes' '-q' '--color=never' '--root' '/root/.opam'
ocaml-platform: [INFO] Error in 'opam' 'switch' 'remove' '/tmp/ocaml-platform-sandbox-5005d3' '--yes' '-q' '--color=never' '--root' '/root/.opam':
[WARNING] Running as root is not recommended
ocaml-platform: [ERROR] Command 'opam install ocaml-system.5.0.0 --yes -q --color=never --switch
/tmp/ocaml-platform-sandbox-5005d3 --root /root/.opam' failed: exited with 31
root@LAPTOP-8VP9UDT7:~#

[panglesd]

Thanks for the more precise report. It seems ocaml-platform-installer is not compatible with the diskuv distribution.
For technical reasons (in order to reuse the OCaml of your current switch in the sandbox switch), ocaml-platform-installer manipulates the PATH variable. But, that might be an in incompatible way with how Diskuv uses it. As a result, the ocaml binary is not found at some point...

Your alternative is to install the platform tools by hand: opam install merlin ocamlformat dune ocaml-lsp-server utop odoc dune-release (you can filter which one you want to install). You won't get the benefit from the installer (cached install and no dependencies) but you'll still get the platform tools!