nix/home/program/bash/module/Nix.nix

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{ const, ... }: {
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text = ''
export _nix_system_config="git+${const.url}"
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# Rebuild system.
# Optionally force the hostname.
# Usage: nixos_rebuild [HOSTNAME]
function nixos_rebuild() {
local target="''${1}"
[[ "''${target}" = "" ]] && target="''${HOSTNAME}"
nixos-rebuild boot --refresh --option eval-cache false --flake "''${_nix_system_config}#''${target}"
}
# Rebuild and switch system.
# Optionally force the hostname.
# Usage: nixos_switch [HOSTNAME]
function nixos_switch() {
local target="''${1}"
[[ "''${target}" = "" ]] && target="''${HOSTNAME}"
nixos-rebuild switch --refresh --option eval-cache false --flake "''${_nix_system_config}#''${target}"
}
# Spawn shell with specified nix environment.
# Uses flake.nix in current dir by default.
# Usage: nix_shell [NAME]
function nix_shell() {
local target="''${1}"
[[ "''${target}" = "" ]] && target="default"
# Create Nix GC root in .NixRoot{NAME}.
nix build ".#devShells.''${NIX_CURRENT_SYSTEM}.''${target}" -o ".NixRoot''${target^}"
NIX_SHELL="''${target}" nix develop ".#devShells.''${NIX_CURRENT_SYSTEM}.''${target}"
}
alias shell="nix_shell"
# Spawn temporary nix-shell with specified packages.
# Usage: nix_tmpshell <PACKAGES>
function nix_tmpshell() {
local IFS=$'\n'
local input=("''${@}")
local pkgs=()
local tag="''${NIX_SHELL}"
if [[ "''${input}" = "" ]]; then
help nix_tmpshell
return 2
fi
[[ "''${tag}" = "" ]] && tag="''${1}"
for pkg in ''${input[@]}; do
pkgs+=("nixpkgs#''${pkg}")
done
NIX_SHELL="''${tag}" NIXPKGS_ALLOW_UNFREE=1 nix shell --impure ''${pkgs[@]}
}
alias tmpshell="nix_tmpshell"
# Build live image.
function nixos_live() {
nix build "''${_nix_system_config}#nixosConfigurations.live.config.system.build.isoImage" --refresh ''${@}
}
# List nixos generations.
function nixos_generations() {
nix-env -p /nix/var/nix/profiles/system --list-generations
}
# Switch nix-on-droid.
function nixdroid_switch() {
nix-on-droid switch --flake "''${_nix_system_config}" ''${@}
}
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# Nix auto-run wrapper.
# Usage: , <COMMAND>
function ,() {
NIX_AUTO_RUN=1 ''${@}
}
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# Autocomplete with available hosts.
function _comp_hosts() {
local IFS=$'\n'
local targets=($(ls ~/.config/linux/system/host/))
_autocomplete_first ''${targets[@]}
}
complete -F _comp_hosts nix_switch nix_rebuild
'';
}