I took it on my Acer XV275K P3, which is supposedly factory calibrated to: a white balance of 7,500K, average Delta E of 1.54 (Green x of .21, y .71, Blue x .15, y .04), and 99.8% sRBG coverage. Using NixOS Unstable (rev 970e93b9f82e2a0f3675757eb0bfc73297cc6370) with KDE Plasma 6.2.4 in Wayland with HDR enabled, with SDR brightness at 50 nits, SDR saturation at +30%, and screen brightness at 80%. Firefox 133.0 64-bit running in native Wayland mode. I also got hue 174 true neutral, but there one or two where I could've chosen either way so idk.
Yeah, and I have home-manager as the nixos module, not standalone. My config is here if you were interested. Some of it is a little messy but it's pretty good.
Personally I just put all my packages in configuration.nix (well, broken up into different files but all in environment.systemPackages). I only use home manager for extra config options for programs like Git, Neovim, or VSCodium. I only have one user so I see no reason for me to separate them.
I never use the flakes search, if I find a flake on github or somewhere then it will say how to add it as a flake input and enable it. That's mostly for extra modules or things like beta versions of software that haven't been added to the official repos yet, almost all of my packages are from the standard packages.
I took it on my Acer XV275K P3, which is supposedly factory calibrated to: a white balance of 7,500K, average Delta E of 1.54 (Green x of .21, y .71, Blue x .15, y .04), and 99.8% sRBG coverage. Using NixOS Unstable (rev 970e93b9f82e2a0f3675757eb0bfc73297cc6370) with KDE Plasma 6.2.4 in Wayland with HDR enabled, with SDR brightness at 50 nits, SDR saturation at +30%, and screen brightness at 80%. Firefox 133.0 64-bit running in native Wayland mode. I also got hue 174 true neutral, but there one or two where I could've chosen either way so idk.