`env_unset`

env_unset returns a dependency that removes an environment variable. It is useful when a tool treats an optional variable as configuration that should not apply to a task.

Arguments

Argument	Required	Description
`key`	Yes	Environment variable name to remove.

Examples

Remove one variable

load("@os@1", "env_unset", "run")

run(("tools/check",), deps=[env_unset("TOOL_CONFIG")])

Combine unset and set operations

load("@os@1", "env_set", "env_unset", "run")

clean_ci = (
    env_unset("LOCAL_CONFIG") +
    env_set("CI", "true")
)

run(("tools/test",), deps=[clean_ci])