Maximilian Bosch 6ccfdb79c7 libutil/logging: extend internal-json logger to make it more machine-readable ... The new error-format is pretty nice from a UX point-of-view, however it's fairly hard to parse the output e.g. for editor plugins such as vim-ale[1] that use `nix-instantiate --parse` to determine syntax errors in Nix expression files. This patch extends the `internal-json` logger by adding the fields `line`, `column` and `file` to easily locate an error in a file and the field `raw_msg` which contains the error-message itself without code-lines and additional helpers. An exemplary output may look like this: ``` [nix-shell]$ ./inst/bin/nix-instantiate ~/test.nix --log-format minimal {"action":"msg","column":1,"file":"/home/ma27/test.nix","level":0,"line":4,"raw_msg":"syntax error, unexpected IF, expecting $end","msg":"<full error-msg with code-lines etc>"} ``` [1] https://github.com/dense-analysis/ale		2020-07-26 02:29:57 +02:00
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manual	libutil/logging: extend internal-json logger to make it more machine-readable	2020-07-26 02:29:57 +02:00