Command Reference

Global Flags

Overview

Global flags are flags that can be applied for any Eta invocation and must be passed before the command.

etlas [GLOBAL-FLAGS] [COMMAND] [COMMAND-FLAGS-OR-ARGS]

Flag Types

For reference on the meaning of a value of the Flag Type column, please consult the Field Types section.

A switch-flag is a flag that takes no argument and activates the flag upon use. Every other flag type represents the format of a single argument for the flag.

Basics Flags

Flags	Flag Type	Description
-h, --help	switch-flag	Show the help text
--version	switch-flag	Print version information
--numeric-version	switch-flag	Print just the version number
--select-eta	eta-version	Select which version of Eta to use with this invocation

Example 1

etlas --numeric-version

Example 2

etlas --select-eta=0.8.6b4 update

Periodic Behavior

Flags	Flag Type	Description
--enable-auto-update	switch-flag	Automatically run etlas update on a daily basis
--disable-auto-update	switch-flag	Does not automatically run etlas update on a daily basis
--enable-send-metrics	switch-flag	Automatically sends metrics to facilitate better evolution of Eta
--disable-send-metrics	switch-flag	Does not automatically sends metrics to facilitate better evolution of Eta

Configuration

Flags	Flag Type	Description
--config-file	filepath	Set an alternate location for the config file
--ignore-expiry	switch-flag	Ignore expiry dates on signed Hackage metadata
--http-transport	transport-type	Specifies the transport to use for http(s) requests
--patches-dir	directory	Specify directory to store patches.
--binaries-dir	directory	Specify location to store downloaded binary executables and packages

Next Section

In the next section, we will now move on to the command-specific Etlas flags.