lix/src
Felix Uhl 3fefc2b284 Fix derivation load assertion errors
When loading a derivation from a JSON, malformed input would trigger
cryptic "assertion failed" errors. Simply replacing calls to `operator []`
with calls to `.at()` was not enough, as this would cause json.execptions
to be printed verbatim.

Display nice error messages instead and give some indication where the
error happened.

*Before:*

```
$ echo 4 | nix derivation add
error: [json.exception.type_error.305] cannot use operator[] with a string argument with number

$ nix derivation show nixpkgs#hello | nix derivation add
Assertion failed: (it != m_value.object->end()), function operator[], file /nix/store/8h9pxgq1776ns6qi5arx08ifgnhmgl22-nlohmann_json-3.11.2/include/nlohmann/json.hpp, line 2135.

$ nix derivation show nixpkgs#hello | jq '.[] | .name = 5' | nix derivation add
error: [json.exception.type_error.302] type must be string, but is object

$ nix derivation show nixpkgs#hello | jq '.[] | .outputs = { out: "/nix/store/8j3f8j-hello" }' | nix derivation add
error: [json.exception.type_error.302] type must be object, but is string

```

*After:*

```
$ echo 4 | nix derivation add
error: Expected JSON of derivation to be of type 'object', but it is of type 'number'

$ nix derivation show nixpkgs#hello | nix derivation add
error: Expected JSON object to contain key 'name' but it doesn't

$ nix derivation show nixpkgs#hello | jq '.[] | .name = 5' | nix derivation add
error: Expected JSON value to be of type 'string' but it is of type 'number'

$ nix derivation show nixpkgs#hello | jq '.[] | .outputs = { out: "/nix/store/8j3f8j-hello" }' | nix derivation add
error:
       … while reading key 'outputs'

       error: Expected JSON value to be of type 'object' but it is of type 'string'
```
2023-08-05 01:34:30 +02:00
..
build-remote Put worker protocol items inside a WorkerProto struct 2023-06-19 12:08:23 -04:00
libcmd Tighten #includes: DerivedPath doesn't care about Realisation 2023-07-20 15:42:06 -04:00
libexpr toJSON: Add attribute path to trace 2023-07-31 13:02:54 +02:00
libfetchers Simplify ContentAddress 2023-07-07 07:30:01 -04:00
libmain nix: Support the --repair flag 2023-04-28 17:03:04 +02:00
libstore Fix derivation load assertion errors 2023-08-05 01:34:30 +02:00
libutil Fix derivation load assertion errors 2023-08-05 01:34:30 +02:00
nix Merge pull request #8650 from obsidiansystems/content-address-simpler 2023-07-21 13:46:53 +02:00
nix-build nix: Support the --repair flag 2023-04-28 17:03:04 +02:00
nix-channel Add nix-channel --list-generations 2023-06-02 10:12:35 +02:00
nix-collect-garbage Clean up a few things related to profiles (#8526) 2023-06-19 04:04:59 +00:00
nix-copy-closure
nix-env Clean up a few things related to profiles (#8526) 2023-06-19 04:04:59 +00:00
nix-instantiate nix: Support the --repair flag 2023-04-28 17:03:04 +02:00
nix-store Simplify ContentAddress 2023-07-07 07:30:01 -04:00
resolve-system-dependencies
toml11