Languages

Configuration for languages that may be used by competitors. We have a number of built-in languages, but also offer support for adding custom languages.

[languages]
# Enable python3 default
python3 = "*"
# Enable built-in Java 21
java = "21"
# Add custom `ocaml` language type
[languges.ocaml]
build = "ocamlc -o out solution.ml"
run = "./out"
source_file = "solution.ml"

Built-in Languages

• python3
• java
  • versions: 8, 11, 21
• javascript
• rust

Custom Languages

Custom languages may be specified by using a table instead of the version.

Key	Optional	Description
build	true	The command that will be used to build the solution. This is run in a temporary directory that gets deleted after all tests have run, so extra generated files will be removed.
run	false	The command that will be used to run the solution. This is run in a temporary directory that gets deleted after all tests have run, so extra generated files will be removed.
source_file	false	Name of the file containing the user’s submitted code.
display_name	true	Optional name for this language profile. This will be used in the UI.
syntax	true	Specifies which language syntax to highlight with. This is used for languages that aren’t supported by major highlighter libraries.