When you want to inspect dotfile you can run, e.g.
nix build .#withPlasma.home-files
You can specify workstation specific settings in $HOME/local/profile, e. g.
export BROWSER=firefox
export ACME_VARFONT=/mnt/font/FreeSans/12a/font
export ACME_FIXFONT=/mnt/font/DejaVuSansMono/13a/font
If you get the following error, when envoking nix command, e.g. nix-shell
bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
add the following to $HOME/local/profile
export LOCALE_ARCHIVE=/usr/lib/locale/locale-archive
You may have to adopt /usr/lib/locale.
When on a non glibc Linux, e.g. alpine try to install
nix-env -i glibc-locales
and add the following to $HOME/local/profile
export LOCALE_ARCHIVE="$(nix-env --installed --no-name --out-path --query glibc-locales)/lib/locale/locale-archive"
Compare with NixOS/nix#599.