Floresta Build with Nix failing

[jaoleal]

From some testing, looks like something is really wrong with our nix evaluation while trying to build florestad.

Error:

       error: attribute 'targetPlatforms' missing
       at /nix/store/idq1bmwwy9rlkc21hccvx42wlwpxsx1f-source/pkgs/build-support/rust/build-rust-package/default.nix:162:7:
          161|       meta.platforms or lib.platforms.all
          162|       rustc.targetPlatforms;
             |       ^
          163|   };

Maybe because of the 23.11 bump to 24.11 but even bumping back gave me:

error: hash mismatch in fixed-output derivation '/nix/store/6ri0a4q455a4llck64yclw31d9388ay3-rust-bitcoin-5a089f0.drv':
         specified: sha256-2v87cb+Wd4OhgDG45Za3bxumaY7QKdw7nKuqKrmtHMs=
            got:    sha256-YXxt5OwNRYiI/5nnCjIXEuU7uisA2Dhb/4D/sRgbjMk=
error: 1 dependencies of derivation '/nix/store/0gb2kq7mmyp5xn5wbj4pb0pp6qmnijvv-bitcoin-0.31.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/2xykk7si872qgh29fs1afcw0xq0nnhkf-cargo-vendor-dir.drv' failed to build
error: 1 dependencies of derivation '/nix/store/xfn7xzyy7savlbs41814xzqa33gzi9c6-floresta-node-0.6.0.drv' failed to build

Opened this issue because i have no clue which change actually broke our building process. Maybe some CI for nix check ?

• Fix Building.
• Add nix check to ci.