diff options
Diffstat (limited to 'doc/manual/rl-next/better-errors-in-nix-repl.md')
-rw-r--r-- | doc/manual/rl-next/better-errors-in-nix-repl.md | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/doc/manual/rl-next/better-errors-in-nix-repl.md b/doc/manual/rl-next/better-errors-in-nix-repl.md deleted file mode 100644 index 2f2714a0e..000000000 --- a/doc/manual/rl-next/better-errors-in-nix-repl.md +++ /dev/null @@ -1,42 +0,0 @@ ---- -synopsis: Concise error printing in `nix repl` -prs: 9928 -cls: 811 -category: Improvements -credits: 9999years ---- - -Previously, if an element of a list or attribute set threw an error while -evaluating, `nix repl` would print the entire error (including source location -information) inline. This output was clumsy and difficult to parse: - -``` -nix-repl> { err = builtins.throw "uh oh!"; } -{ err = «error: - … while calling the 'throw' builtin - at «string»:1:9: - 1| { err = builtins.throw "uh oh!"; } - | ^ - - error: uh oh!»; } -``` - -Now, only the error message is displayed, making the output much more readable. -``` -nix-repl> { err = builtins.throw "uh oh!"; } -{ err = «error: uh oh!»; } -``` - -However, if the whole expression being evaluated throws an error, source -locations and (if applicable) a stack trace are printed, just like you'd expect: - -``` -nix-repl> builtins.throw "uh oh!" -error: - … while calling the 'throw' builtin - at «string»:1:1: - 1| builtins.throw "uh oh!" - | ^ - - error: uh oh! -``` |