Sys time 16.07 millis 55.00 micros 16.01 millisĪnd installation, in either case, is pretty fast.

* legacyPackages.x86_64-linux.libreoffice (7.0.4.2)Ĭomprehensive, professional-quality productivity suite, a variant of  time nix search -experimental-features 'nix-command flakes' nixpkgs libreoffice Sys time 0.52 secs 67.00 micros 0.52 secsĪ Nix search using the new method, which leverages cached evaluation of Nixpkgs, takes about half a second: Libreoffice-fresh-unwrapped libreoffice-7.1.2.2 Libreoffice-still-unwrapped libreoffice-7.0.4.2 I  ~  time nix-env -f '' -qaP libreoffice `nix search`, however, is extremely fast on the unstable releases of Nix.Ī Nix search using the old method is extremely slow, > 7 seconds: On the old/stable release of Nix, you use something like `nix-env -qaP` for this, and that requires evaluation of every package in Nix, and can take a long time. I imagine what you're identifying as slow is searching through Nix packages. In that case Nix evaluation time probably dominates.) (I think this is probably no longer the case with Pacman 6.0, which finally parallelizes downloads. It's generally several times faster than apt, for installs that involve multiple large downloads, for example, and historically it's also faster than pacman. Nix evaluation can be slow sometimes, but installation is generally relatively fast, since everything in Nix is fully parallelizable.

Libreoffice fresh vs.still