Hello, I’ve just installed the ocaml dev environment on a windows 11 system, using opam 2.2. Trying the hello world example using Dune i found that on first run, the executable takes more than 20 secs to start. Successive run starts immediately. I remember that utop did the same thing on first ru…

That sounds like Windows Defender or some other malware/anti-virus checker on your machine doing a scan. If it is, eventually it will get worse; you will start running into your executables randomly being deleted. Try adding a folder exclusion to your development directory (ex. C:\source) in Defende…

@jbeckford That page 404s for me.

Thank you, I’m running Avira AV, excuded the project folder and the problem seems to be solved. Do you think I have to exclude some other folder or file?

[image] Wile: Do you think I have to exclude some other folder or file? You should add the opam root folder as well. Run: opam var root to show the folder.

Done, just one more question, Should I rerun “opam init” to use different shell (PowerShell, Win11 prompt, cygwin)? PS: Have a nice Halloween night :slight_smile:

The opam init is independent of the shell, except perhaps under Cygwin. (Someone from the opam team will need to answer that) I typically use PowerShell inside Windows Terminal or inside Visual Studio Code for OCaml development. That makes it easy to copy and paste commands from Unix-oriented sites…

Ok, thanks again I’m going to install and configure VSCode in the evening, ITA time.

Ocaml windows standalone exe issue

Learning

jbeckford November 1, 2024, 4:03pm 6

You should add the opam root folder as well. Run:

opam var root

to show the folder.

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Ocaml windows standalone exe issue

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