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home-manager: add repl subcommand

Similar to the `nixos-rebuild repl` command, `home-manager repl` will
launch the Nix read-evaluate-print-loop environment with the Home
Manager configuration loaded.

To make that more useful, also add the pkgs and options attributes from
the generated Home Manager configuration to the environment.

This doesn't currently work with flakes, because I don't use them and
I'm not confident I could safely test that function.
This commit is contained in:
Adam Dinwoodie 2024-07-15 22:46:20 +01:00 committed by Adam Dinwoodie
parent e83414058e
commit 8c4f5dcb9c
2 changed files with 30 additions and 2 deletions

View file

@ -634,6 +634,28 @@ function doBuild() {
presentNews
}
function doRepl() {
setFlakeAttribute
if [[ -v FLAKE_CONFIG_URI ]]; then
_i 'home-manager repl does not (yet) support flakes' >&2
return 1
fi
setConfigFile
extraArgs=()
for p in "${EXTRA_NIX_PATH[@]}"; do
extraArgs+=(-I "$p")
done
exec nix repl \
--file '<home-manager/home-manager/home-manager.nix>' \
"${extraArgs[@]}" \
"${PASSTHROUGH_OPTS[@]}" \
--argstr confPath "$HOME_MANAGER_CONFIG" \
--argstr confAttr "$HOME_MANAGER_CONFIG_ATTRIBUTE"
}
function doSwitch() {
setWorkDir
@ -937,6 +959,9 @@ function doHelp() {
echo " Remove indicated generations. Use 'generations' command to"
echo " find suitable generation numbers."
echo
echo " repl"
echo " Opens the configuration in \`nix repl\`"
echo
echo " expire-generations TIMESTAMP"
echo " Remove generations older than TIMESTAMP where TIMESTAMP is"
echo " interpreted as in the -d argument of the date tool. For"
@ -960,7 +985,7 @@ while [[ $# -gt 0 ]]; do
opt="$1"
shift
case $opt in
build|init|instantiate|option|edit|expire-generations|generations|help|news|packages|remove-generations|switch|uninstall)
build|init|instantiate|option|edit|expire-generations|generations|help|news|packages|remove-generations|repl|switch|uninstall)
COMMAND="$opt"
;;
-A)
@ -1105,6 +1130,9 @@ case $COMMAND in
packages)
doListPackages
;;
repl)
doRepl
;;
news)
doShowNews --all
;;

View file

@ -15,4 +15,4 @@ let
check = check;
};
in { inherit (env) activationPackage config; }
in { inherit (env) activationPackage config pkgs options; }