# Publishing my first Haskell executable

**URL:** <https://discourse.flox.dev/t/publishing-my-first-haskell-executable/477>\
**Category:** Developing with flox\
**Tags:** closed\
**Created:** [November 8, 2022, 9:38pm UTC](https://discourse.flox.dev/t/publishing-my-first-haskell-executable/477 "2022-11-08T21:38:00Z")\
**Posts on this page:** 1\
**Showing post:** 9

<div class="post-metadata">

**Author:** ![etorreborre](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/etorreborre/32/428_2.png) [@etorreborre](https://discourse.flox.dev/u/etorreborre)\
**Post date:** [December 2, 2022, 2:13pm UTC](https://discourse.flox.dev/t/publishing-my-first-haskell-executable/477/9 "2022-12-02T14:13:58Z")

</div>

I seeing something weird. But first of all:

- the new UI is great! Lots more explanations, Yes / No button, I really like it

- I wonder about the consistency of the “channel repository:” input when doing `flox publish`. I need to specify a git URL there like `git@github.com:etorreborre/floxpkgs.git`. On the other hand, if I go `flox channels` the URL says `etorreborre github:etorreborre/floxpkgs/main` (which would not work)

- still on the URL note, but possibly out of flox control, I’m using URL that are like `etorreborre:etorreborre/floxpkgs` and `work:etorreborre/work-repository` and in my `.ssh/config` file I have a mapping so that I can use different keys for different github users. Those URLs will not work with `flox publish`

Now the problem I’m seeing is:

```auto
± flox publish default
build repository: git@github.com:etorreborre/cmt.git
package name: cmt
channel repository: git@github.com:etorreborre/floxpkgs.git
HINT: avoid having to answer these questions next time with:
$ flox publish -A cmt --build-repo git@github.com:etorreborre/cmt.git --channel-repo git@github.com:etorreborre/floxpkgs.git
Cloning git@github.com:etorreborre/floxpkgs.git ...
Cloning into '/var/folders/kb/tjt27xcn6_dg095y88337mjm0000gn/T/tmp.xm4dMBtVYb'...
remote: Enumerating objects: 56, done.
remote: Counting objects: 100% (56/56), done.
remote: Compressing objects: 100% (36/36), done.
remote: Total 56 (delta 7), reused 49 (delta 3), pack-reused 0
Receiving objects: 100% (56/56), 10.85 KiB | 3.62 MiB/s, done.
Resolving deltas: 100% (7/7), done.
Building cmt ...
error: Package ‘cmt-1.17’ in /nix/store/9m8drnpifyl5qsx93g6ll2xw6wkps03z-source/pkgs/applications/audio/cmt/default.nix:27 is not supported on ‘x86_64-darwin’, refusing to evaluate.

       a) To temporarily allow packages that are unsupported for this system, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1

        Note: For `nix shell`, `nix build`, `nix develop` or any other Nix 2.4+
        (Flake) command, `--impure` must be passed in order to read this
        environment variable.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowUnsupportedSystem = true; }
       in configuration.nix to override this.

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowUnsupportedSystem = true; }
       to ~/.config/nixpkgs/config.nix.
(use '--show-trace' to show detailed location information)

ERROR: could not build git+ssh://git@github.com/etorreborre/cmt.git?rev=3cf77bee56e4b079dbb54b513482249db4ab8dd7#cmt

```

The weird message is this

```auto
Package ‘cmt-1.17’ in /nix/store/9m8drnpifyl5qsx93g6ll2xw6wkps03z-source/pkgs/applications/audio/cmt/default.nix:27

```

it mentions `applications/audio/cmt`. That seems like a conflict with [this package](https://search.nixos.org/packages?channel=22.11&type=packages&query=cmt).

What do you think?

---

_[View the full topic](https://discourse.flox.dev/t/publishing-my-first-haskell-executable/477)._