lix/tests/functional/repl_characterization/data
alois31 81a0624d76
libexpr/print: pretty-print idempotently
When pretty-printing is enabled, previously an unforced thunk would trigger
indentation, even when it subsequently does not evaluate to a nested structure.
The resulting output looked inconsistent, and furthermore pretty-printing was
not idempotent (since pretty-printing the same value again, which is now fully
evaluated, will not trigger indentation).
When strict evaluation is enabled, force the item before inspecting its type,
so that it is properly known whether it contains a nested structure.
Furthermore, there is no need to cause indentation for unforced thunks, since
the very next operation will be printing them as `«thunk»`.

This is mostly a port of https://github.com/NixOS/nix/pull/11100 , but we only
force the item when it's going to be forced anyway due to strict
pretty-printing, and a new test was written since the REPL testing framework in
Lix is different.

Co-Authored-By: Robert Hensing <robert@roberthensing.nl>
Change-Id: Ib7560fe531d09e05ca6b2037a523fe21a26d9d58
2024-07-18 18:41:28 +02:00
..
extra_data
basic.ast
basic.test
basic_repl.test
basic_tidied.ast
basic_tidied.test
errors.test
idempotent.test
no_nested_debuggers.nix
no_nested_debuggers.test
regression_9917.nix
regression_9917.test
regression_9918.nix
regression_9918.test
regression_l145.nix
regression_l145.test
repl_overlays.nix
repl_overlays.test
repl_overlays_compose.nix
repl_overlays_compose.test
repl_overlays_destructure_without_dotdotdot_errors.test
repl_overlays_destructure_without_formals_ok.test
repl_overlays_error.test
repl_printing.test
stack_vars.nix
stack_vars.test