nix-super/tests/db-migration.sh
John Ericson 87da941348 Clean up daemon handling
Split `common.sh` into the vars and functions definitions vs starting
the daemon (and possibly other initialization logic). This way,
`init.sh` can just `source` the former. Trying to start the daemon
before `nix.conf` is written will fail because `nix daemon` requires
`--experimental-features 'nix-command'`.

`killDaemon` is idempotent, so it's safe to call when no daemon is
running.

`startDaemon` and `killDaemon` use the PID (which is now exported to
subshells) to decide whether there is work to be done, rather than
`NIX_REMOTE`, which might conceivably be set differently even if a
daemon is running.

`startDaemon` and `killDaemon` can save/restore the old `NIX_REMOTE` as
`NIX_REMOTE_OLD`.

`init.sh` kills daemon before deleting everything (including the daemon
socket).
2023-02-23 11:31:44 -05:00

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# Test that we can successfully migrate from an older db schema
# Only run this if we have an older Nix available
# XXX: This assumes that the `daemon` package is older than the `client` one
if [[ -z "$NIX_DAEMON_PACKAGE" ]]; then
exit 99
fi
source common.sh
killDaemon
# Fill the db using the older Nix
PATH_WITH_NEW_NIX="$PATH"
export PATH="$NIX_DAEMON_PACKAGE/bin:$PATH"
clearStore
nix-build simple.nix --no-out-link
nix-store --generate-binary-cache-key cache1.example.org $TEST_ROOT/sk1 $TEST_ROOT/pk1
dependenciesOutPath=$(nix-build dependencies.nix --no-out-link --secret-key-files "$TEST_ROOT/sk1")
fixedOutPath=$(IMPURE_VAR1=foo IMPURE_VAR2=bar nix-build fixed.nix -A good.0 --no-out-link)
# Migrate to the new schema and ensure that everything's there
export PATH="$PATH_WITH_NEW_NIX"
info=$(nix path-info --json $dependenciesOutPath)
[[ $info =~ '"ultimate":true' ]]
[[ $info =~ 'cache1.example.org' ]]
nix verify -r "$fixedOutPath"
nix verify -r "$dependenciesOutPath" --sigs-needed 1 --trusted-public-keys $(cat $TEST_ROOT/pk1)