Fix coverage reporting

[gaborbernat]

Signed-off-by: Bernát Gábor gaborjbernat@gmail.com

[MeCorey]

virtualenv activation module

Activate with overlay use activate.nu

Deactivate with deactivate, as usual

To customize the overlay name, you can call overlay use activate.nu as foo,

but then simply deactivate won't work because it is just an alias to hide

the "activate" overlay. You'd need to call overlay hide foo manually.

export-env {
def is-string [x] {
($x | describe) == 'string'
}

def has-env [name: string] {
    $name in (env).name
}

# Emulates a `test -z`, but btter as it handles e.g 'false'
def is-env-true [name: string] {
  if (has-env $name) {
    # Try to parse 'true', '0', '1', and fail if not convertible
    let parsed = do -i { $env | get $name | into bool }
    if ($parsed | describe) == 'bool' {
      $parsed