Add nix flake

[notjustanyusername]

This is based off #262

I added a CI target to check the flake is correct. Also I added the features to tonic in teos-common as it does not currently compile with defaults.

I've got the tower and plugin both deployed based off this configuration and its working as expected.

[mariocynicys]

Thanks

Will review this next week. I know nothing about nix though so we might wanna get another review from a nix expert.
@seberm could you give this a review please?

[notjustanyusername]

Ok great. I've been using this since last year but just updated nixpkgs to 25.05.

[seberm]

Ok great. I've been using this since last year but just updated nixpkgs to 25.05.

Hello @mariocynicys, sorry for the late answer. I am not considering myself a nix expert :), but it looks good to me.

It builds correctly and it seems it works as expected on my macos (nix-darwin):

❯ nix flake check                                                                                                                                                                                

❯ nix build

❯ ls -alh ./result/bin
total 18M
dr-xr-xr-x 4 root wheel  128 Jan  1  1970 ./
dr-xr-xr-x 3 root wheel   96 Jan  1  1970 ../
-r-xr-xr-x 1 root wheel 5.4M Jan  1  1970 teos-cli*
-r-xr-xr-x 1 root wheel  13M Jan  1  1970 teosd*

❯ ./result/bin/teos-cli -h
teos-cli 0.2.0
The Eye of Satoshi - CLI

USAGE:
    teos-cli [OPTIONS] <SUBCOMMAND>
....

❯ ./result/bin/teosd -h
teos 0.2.0
The Eye of Satoshi - Lightning watchtower

USAGE:
    teosd [FLAGS] [OPTIONS]
...

Could you please allow/approve the Github Actions to run for this PR, so we can check the CI tests are passing?

2 workflows awaiting approval

This workflow requires approval from a maintainer

Thanks

[mariocynicys]

hey @JosephGoulden
could you check the failing CI please.

[mariocynicys]

utACK

LGTM. Thanks!