Hi,
I'm testing nextcloud it seem there is an issue.
I'm tying to install a fresh nextcloud and with the minimal example of the man : https://nixos.org/manual/nixos/stable/index.html#module-services-nextcloud

I get :

janv. 29 16:56:31 cloud systemd[1]: Starting nextcloud-setup.service...
janv. 29 16:56:31 cloud nextcloud-setup-start[20532]: Nextcloud is not installed - only a limited number of commands are available
janv. 29 16:56:31 cloud nextcloud-setup-start[20532]:
janv. 29 16:56:31 cloud nextcloud-setup-start[20532]: Command "upgrade" is not defined.

nextcloud-setup-start try to update a new install

same result with :
nixpkgs.config.permittedInsecurePackages = [ "nextcloud-19.0.6" ];
or
package = pkgs.nextcloud20;

• system: `"x86_64-linux"
• host os: Linux 5.4.88, NixOS, 21.03pre266581.e5ce05cc1ee (Okapi)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.3.10
• channels(root): "nixos-20.09.2750.85abeab48b5, nixpkgs-21.03pre266581.e5ce05cc1ee"
• nixpkgs: /root/.nix-defexpr/channels/nixpkgs

@Ma27 @beardhatcode @Mic92
I may not be calling all the maintainers in case it's a false alarm :-)