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justfil: _a_machine: remember last choice

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Peder Bergebakken Sundt 2025-05-30 19:10:14 +02:00
parent 48a5f4e79e
commit 4e44da29b5
1 changed files with 19 additions and 1 deletions
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20
justfile
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@ -21,5 +21,23 @@ run-vm machine=`just _a_machine`:
| xargs -L 1 nix flake lock --update-input | xargs -L 1 nix flake lock --update-input
# helpers
[no-exit-message]
_a_machine: _a_machine:
nix eval .#nixosConfigurations --apply builtins.attrNames --json | jq .[] -r | gum filter #!/usr/bin/env -S sh -euo pipefail
machines="$(
nix eval {{nix_eval_opts}} .#nixosConfigurations --apply builtins.attrNames --json | jq .[] -r
)"
[ -n "$machines" ] || { echo >&2 "ERROR: no machines found"; false; }
if [ -s .direnv/vars/last-machine.txt ]; then
machines="$(
grep <<<"$machines" -xF "$(cat .direnv/vars/last-machine.txt)" ||:
grep <<<"$machines" -xFv "$(cat .direnv/vars/last-machine.txt)" ||:
)"
fi
choice="$(gum filter <<<"$machines")"
mkdir -p .direnv/vars
cat <<<"$choice" >.direnv/vars/last-machine.txt
cat <<<"$choice"