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6ccfdb79c7
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
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| .. | ||
| command-ref.xml | ||
| conf-file.xml | ||
| env-common.xml | ||
| files.xml | ||
| main-commands.xml | ||
| nix-build.xml | ||
| nix-channel.xml | ||
| nix-collect-garbage.xml | ||
| nix-copy-closure.xml | ||
| nix-daemon.xml | ||
| nix-env.xml | ||
| nix-hash.xml | ||
| nix-instantiate.xml | ||
| nix-prefetch-url.xml | ||
| nix-shell.xml | ||
| nix-store.xml | ||
| opt-common-syn.xml | ||
| opt-common.xml | ||
| opt-inst-syn.xml | ||
| utilities.xml | ||