Improve detect NixOS packages #195
Description
The current way to find installed packages does not work correctly:
fastfetch | grep Packages
Packages: 83 (nix-user)
Actually only a few packages are installed:
nix-env -q
dar-2.7.6
oil-0.11.0
find /etc/profiles/per-user/$USER/bin/ -type l -exec readlink {} \; | sed -E 's|[^-]+-([^/]+)/.*|\1|g' | sort -u
duf-0.8.1
fio-3.30
inxi-3.3.04-1
It is needing to show the number of system packages (may take up to several seconds) - (nix-system):
find /run/current-system/sw/bin/ -type l -exec readlink {} \; | sed -E 's|[^-]+-([^/]+)/.*|\1|g' | sort -u | wc
90 90 1367
Users packages - (nix-user):
find ~/.nix-profile/bin -type l -exec readlink {} \; | sed -E 's|[^-]+-([^/]+)/.*|\1|g' | sort -u | wc
2 2 21
find /etc/profiles/per-user/$USER/bin -type l -exec readlink {} \; | sed -E 's|[^-]+-([^/]+)/.*|\1|g' | sort -u | wc
3 3 33
Default packages - (nix-default):
find /nix/var/nix/profiles/default/bin -type l -exec readlink {} \; | sed -E 's|[^-]+-([^/]+)/.*|\1|g' | sort -u | wc
1 1 17
Other methods do not give the exact number of packages installed
This method found in https://discourse.nixos.org/t/can-i-inspect-the-installed-versions-of-system-packages/2763/18