I had to revert this commit to compile irmin

[aweis]

888715f

Otherwise I get this error:

File "src/irmin-git/irmin_git.ml", line 181, characters 26-29:
Error: The function applied to this argument has type
?capacity:int -> (string, Raw.EncoderWithoutHeader.error) result
This argument cannot be applied with label ~raw
ocamlopt src/irmin-git/.irmin_git.objs/native/irmin_git.{cmx,o} (exit 2)

[dinosaure]

Currently, irmin uses the last version of ocaml-git available in GitHub. So if you want to use last version of irmin, you should pin ocaml-git too with: opam pin add git https://github.com/mirage/ocaml-git.git with OPAM - you should pin git-mirage, git-unix and git-http too.

[avsm]

@aweis, thanks for the report. How are you currently installing the development version of Irmin? Did you get it to work with the pinned git versions?

There is a big 2.0 release around the corner when all these development branches will be released -- it is tracked in #658

[aweis]

When I filed this bug I was building Irmin from source. I sort of gave up on this approach and started using the packages on opam (1.4 is the last major release there)

I am new to ocaml - is there a way to push irmin 2.0 alpha to opam so users of esy can easily get a 2.0 version to play around with?

[aweis]

I was building irmin as a dependency to my esy application. I specified a resolution as follows:

"@opam/irmin": "mirage/irmin:irmin.opam#8c94ce2ecef64921f9c3494f4e4ea312883cca10",

(I needed to do this to get irmin 2.0 to build)

I can confirm that when I also add the resolution
"@opam/irmin-git": "mirage/irmin:irmin-git.opam#8c94ce2ecef64921f9c3494f4e4ea312883cca10",

this bug still persists.

I even tried using master of ocaml-git:

"@opam/ocaml-git": "mirage/ocaml-git:ocaml-git.opam#27640eba56577f1802ef6ea0502b0e0b53079878",

the build error still occurs

[dinosaure]

@aweis can we have a report of your error? I can not reproduce build error on my side with:

• encore#master
• ke#master
• checkseum#master
• ocaml-git#master
• irmin#master

[aweis]

FYI @avsm thank you for writing this paper. http://anil.recoil.org/papers/2015-jfla-irmin.pdf

Very helpful!

[aweis]

I can close this now since I probably was doing something wrong with the commit hashes I was building irmin against:

https://github.com/aweis/irmin-web/blob/master/package.json#L89-L90

from this you can see the esy resolutions I am using that is able to correctly build irmin.

Thanks for your help for looking into this and answering questions.

[avsm]

Thanks @aweis -- none of the development team use esy day-to-day so we're not familiar with how to use it. My understanding is that esy can wrap opam pin, so perhaps @jordwalke could provide some instructions for our README about how that works.