Commits on Mar 10, 2024

1. Print top-level errors normally in nix repl …

   Previously, errors while printing values in `nix repl` would be printed
   in `«error: ...»` brackets rather than displayed normally:
   
   ```
   nix-repl> legacyPackages.aarch64-darwin.pythonPackages.APScheduler
   «error: Package ‘python-2.7.18.7’ in /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/cpython/2.7/default.nix:335 is marked as insecure, refusing to evaluate.»
   ```
   
   Now, errors will be displayed normally if they're emitted at the
   top-level of an expression:
   
   ```
   nix-repl> legacyPackages.aarch64-darwin.pythonPackages.APScheduler
   error:
          … in the condition of the assert statement
            at /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/lib/customisation.nix:268:17:
             267|     in commonAttrs // {
             268|       drvPath = assert condition; drv.drvPath;
                |                 ^
             269|       outPath = assert condition; drv.outPath;
   
          … in the left operand of the OR (||) operator
            at /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/passthrufun.nix:28:45:
              27|         if lib.isDerivation value then
              28|           lib.extendDerivation (valid value || throw "${name} should use `buildPythonPackage` or `toPythonModule` if it is to be part of the Python packages set.") {} value
                |                                             ^
              29|         else
   
          (stack trace truncated; use '--show-trace' to show the full trace)
   
          error: Package ‘python-2.7.18.7’ in /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/cpython/2.7/default.nix:335 is marked as insecure, refusing to evaluate.
   ```
   
   Errors emitted in nested structures (like e.g. when printing `nixpkgs`)
   will still be printed in brackets.

   

   9999years committed Mar 10, 2024
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