most installation methods fail

[domenkozar]

❯ nix run \
  --option extra-substituters 'https://nixpkgs-update.cachix.org/' \
  --option extra-trusted-public-keys 'nixpkgs-update.cachix.org-1:6y6Z2JdoL3APdu6/+Iy8eZX2ajf09e4EE9SnxSML1W8=' \
  -f https://github.com/ryantm/nixpkgs-update/archive/main.tar.gz \
  -c nixpkgs-update --help
error: unrecognised flag '-c'
Try 'nix --help' for more information.

❯ nix shell \
  --option extra-substituters 'https://nixpkgs-update.cachix.org/' \
  --option extra-trusted-public-keys 'nixpkgs-update.cachix.org-1:6y6Z2JdoL3APdu6/+Iy8eZX2ajf09e4EE9SnxSML1W8=' \
  -f https://github.com/ryantm/nixpkgs-update/archive/main.tar.gz \
  -c nixpkgs-update --help
error: opening file '/nix/store/ijx5h2wj636095c69x8qswh8wzxh6yac-source/default.nix': No such file or directory

❯ nix-env \
  --option extra-substituters 'https://nixpkgs-update.cachix.org/' \
  --option extra-trusted-public-keys 'nixpkgs-update.cachix.org-1:6y6Z2JdoL3APdu6/+Iy8eZX2ajf09e4EE9SnxSML1W8=' \
  -if https://github.com/ryantm/nixpkgs-update/archive/main.tar.gz
error: cannot evaluate a function that has an argument without a value ('mkDerivation')
       Nix attempted to evaluate a function as a top level expression; in
       this case it must have its arguments supplied either by default
       values, or passed explicitly with '--arg' or '--argstr'. See
       https://nixos.org/manual/nix/stable/language/constructs.html#functions.

       at /nix/store/ijx5h2wj636095c69x8qswh8wzxh6yac-source/nixpkgs-update.nix:1:3:

            1| { mkDerivation, aeson, base, bytestring, conduit, containers
             |   ^
            2| , cryptohash-sha256, directory, doctest, errors, filepath, github

[EtienneBruines]

When removing the unrecognized flag -c:

$ nix run --option extra-substituters 'https://nixpkgs-update.cachix.org/'   --option extra-trusted-public-keys 'nixpkgs-update.cachix.org-1:6y6Z2JdoL3APdu6/+Iy8eZX2ajf09e4EE9SnxSML1W8='   -f https://github.com/ryantm/nixpkgs-update/archive/main.tar.gz   nixpkgs-update 
error: experimental Nix feature 'nix-command' is disabled; use '--extra-experimental-features nix-command' to override

When then adding that:

$ nix run --extra-experimental-features nix-command  --option extra-substituters 'https://nixpkgs-update.cachix.org/'   --option extra-trusted-public-keys 'nixpkgs-update.cachix.org-1:6y6Z2JdoL3APdu6/+Iy8eZX2ajf09e4EE9SnxSML1W8='   -f https://github.com/ryantm/nixpkgs-update/archive/main.tar.gz   nixpkgs-update 
warning: ignoring untrusted substituter 'https://nixpkgs-update.cachix.org/'
error: opening file '/nix/store/ijx5h2wj636095c69x8qswh8wzxh6yac-source/default.nix': No such file or directory

(Which then matches the error message at the nix shell option.)