mirror of
https://github.com/NixOS/nix.git
synced 2025-11-18 00:12:43 +01:00
0fa08b4516
Previously, there were two mostly-identical value printers -- one in `libexpr/eval.cc` (which didn't force values) and one in `libcmd/repl.cc` (which did force values and also printed ANSI color codes). This PR unifies both of these printers into `print.cc` and provides a `PrintOptions` struct for controlling the output, which allows for toggling whether values are forced, whether repeated values are tracked, and whether ANSI color codes are displayed. Additionally, `PrintOptions` allows tuning the maximum number of attributes, list items, and bytes in a string that will be displayed; this makes it ideal for contexts where printing too much output (e.g. all of Nixpkgs) is distracting. (As requested by @roberth in https://github.com/NixOS/nix/pull/9554#issuecomment-1845095735) Please read the tests for example output. Future work: - It would be nice to provide this function as a builtin, perhaps `builtins.toStringDebug` -- a printing function that never fails would be useful when debugging Nix code. - It would be nice to support customizing `PrintOptions` members on the command line, e.g. `--option to-string-max-attrs 1000`. |
||
|---|---|---|
| .. | ||
| built-path.cc | ||
| built-path.hh | ||
| command-installable-value.cc | ||
| command-installable-value.hh | ||
| command.cc | ||
| command.hh | ||
| common-eval-args.cc | ||
| common-eval-args.hh | ||
| editor-for.cc | ||
| editor-for.hh | ||
| installable-attr-path.cc | ||
| installable-attr-path.hh | ||
| installable-derived-path.cc | ||
| installable-derived-path.hh | ||
| installable-flake.cc | ||
| installable-flake.hh | ||
| installable-value.cc | ||
| installable-value.hh | ||
| installables.cc | ||
| installables.hh | ||
| legacy.cc | ||
| legacy.hh | ||
| local.mk | ||
| markdown.cc | ||
| markdown.hh | ||
| nix-cmd.pc.in | ||
| repl.cc | ||
| repl.hh | ||