forked from lix-project/lix
Jade Lovelace
18ed6c3bdf
This allows for automating using the repl without needing a PTY, with
very easy to write test files.
Change-Id: Ia8d7854edd91f93477638942cb6fc261354e6035
60 lines
1.3 KiB
Text
60 lines
1.3 KiB
Text
nix-repl> 1 + 1
|
||
2
|
||
|
||
nix-repl> :doc builtins.head
|
||
Synopsis: builtins.head list
|
||
|
||
Return the first element of a list; abort evaluation if
|
||
the argument isn’t a list or is an empty list. You can
|
||
test whether a list is empty by comparing it with [].
|
||
|
||
nix-repl> f = a: "" + a
|
||
|
||
Expect the trace to not contain any traceback:
|
||
|
||
nix-repl> f 2
|
||
error:
|
||
… while evaluating a path segment
|
||
at «string»:1:10:
|
||
1| a: "" + a
|
||
| ^
|
||
|
||
error: cannot coerce an integer to a string: 2
|
||
|
||
nix-repl> :te
|
||
showing error traces
|
||
|
||
Expect the trace to have traceback:
|
||
|
||
nix-repl> f 2
|
||
error:
|
||
… from call site
|
||
at «string»:1:1:
|
||
1| f 2
|
||
| ^
|
||
|
||
… while calling anonymous lambda
|
||
at «string»:1:2:
|
||
1| a: "" + a
|
||
| ^
|
||
|
||
… while evaluating a path segment
|
||
at «string»:1:10:
|
||
1| a: "" + a
|
||
| ^
|
||
|
||
error: cannot coerce an integer to a string: 2
|
||
|
||
Turning it off should also work:
|
||
|
||
nix-repl> :te
|
||
not showing error traces
|
||
|
||
nix-repl> f 2
|
||
error:
|
||
… while evaluating a path segment
|
||
at «string»:1:10:
|
||
1| a: "" + a
|
||
| ^
|
||
|
||
error: cannot coerce an integer to a string: 2
|