Re: Package file indexing

[Nicolò Balzarotti]

Hi Pierre,
on NixOS, if you try to run the name of a program that you don't have
installed (eg: $ endlessh) you get:

The program ‘endlessh’ is currently not installed. You can install it by typing:
nix-env -iA nixos.endlessh

program-not-found is a perl script that uses an sqlite file placed
under:
/nix/var/nix/profiles/per-user/root/channels/nixos/programs.sqlite

I don't know how this database is created. Table structure:

CREATE TABLE Programs (
    name        text not null,
    system      text not null,
    package     text not null,
    primary key (name, system, package)
  );

like kbdinfo|i686-linux|kbd

(a nice thing I just found reading it: if you set NIX_AUTO_INSTALL=1 it
automatically spawns a nix-shell with the required package and starts
the program)

Nicolò

Pierre Neidhardt <address@hidden> writes:

> Ludovic Courtès <address@hidden> writes:
>
>> You should look at how NixOS does it for its ‘command-not-found’ support
>> (I think it’s part of NixOS, not Nix).  IIRC they distribute an SQLite
>> database, but it’s a pretty ad-hoc mechanism without authentication.
>
> I haven't found this yet, but I found this instead:
>
> https://github.com/bennofs/nix-index/pulls
>
> Tobias, are you sure Nix has such a feature?
>
> -- 
> Pierre Neidhardt
> https://ambrevar.xyz/