Installing Newt on Linux

You can install the latest stable release (1.0.0) of the newt tool from a Debian binary package (amd64) or from a Debian source package. This page shows you how to:

  1. Set up your computer to retrieve Debian packages from the runtimeco debian package repository.
  2. Install the latest stable release version of newt from a Debian binary package.
  3. Install the latest stable release version of newt from a Debian source package.

If you are installing on an amd64 platform, we recommend that you install from the binary package.

Note: We have tested the newt tool binary and apt-get install from the runtimeco Debian package repository for Ubuntu version 16. Earlier Ubuntu versions (for example: Ubuntu 14) may have incompatibility with the repository. We recommend that you upgrade Ubuntu on your computer.

Note: See Setting Up an Go Environment to Contribute to Newt and Newtmgr Tools if you want to:

  • Use the newt tool with the latest updates from the master branch. The master branch may be unstable and we recommend that you use the latest stable release version.
  • Contribute to the newt tool.

Setting Up Your Computer to Get Packages from runtimeco

The newt Debian packages are stored in a private repository on https://github/runtimeco/debian-mynewt. The following steps must be performed on your computer to retreive packages from the repository:

Note: You only need to perform this setup once on your computer.

  1. Install the apt-transport-https package to use HTTPS to retrieve packages.
  2. Download the public key for the runtimeco debian repository and import the key into the apt keychain.
  3. Add the repository for the binary and source packages to the apt source list.

Install the apt-transport-https package:

$sudo apt-get update
$sudo apt-get install apt-transport-https

Download the public key for the runtimeco apt repo (Note: There is a - after apt-key add):

wget -qO - | sudo apt-key add -

Add the repository for the binary and source packages to the mynewt.list apt source list file.

$sudo -s
[sudo] password for <user>:
root$ cat > /etc/apt/sources.list.d/mynewt.list <<EOF
deb latest main
deb-src latest main

Note: Do not forget to exit the root shell.

Verify the content of the source list file:

$more /etc/apt/sources.list.d/mynewt.list
deb latest main
deb-src latest main

Update the available packages:

$sudo apt-get update

Note: If you are not using Ubuntu version 16, you may see the following errors. We recommend that you upgrade Ubuntu. We have provided instructions on how to manually download and install the binary package if you choose not to upgrade, but you will want to upgrade Ubuntu if you are installing from source.

W: Failed to fetch  HttpError404

W: Failed to fetch  Bad header line

W: Failed to fetch  HttpError404

E: Some index files failed to download. They have been ignored, or old ones used instead.

Installing the Latest Release of Newt from a Binary Package

For Linux amd64 platforms, you can install the latest stable version (1.0.0) of newt from the newt Debian binary package.

$sudo apt-get install newt
Reading package lists... Done
Building dependency tree       
Reading state information... Done


Preparing to unpack .../newt_1.0.0-1_amd64.deb ...
Unpacking newt (1.0.0-1) ...
Setting up newt (1.0.0-1) ...

Note:If you are not using Ubuntu version 16 and are not able to update the runtimeco Debian package repo on your computer successfully, you can manually download and install the newt_1.0.0-1_amd64.deb binary package as follows:

$sudo dpkg -i newt_1.0.0-1_amd64.deb

See Checking the Installed Version of Newt to verify that you are using the installed version of newt.

Installing the Latest Stable Release of Newt from a Source Package

If you are running Linux on a different architecture, you can install the Debian source package for the latest stable release (1.0.0) of newt. The installation of the source package builds the newt binary and creates a Debian binary package that you then install.

Note: Newt version 1.0.0 has been tested on Linux amd64 platforms. Version 1.0.0 does not build on 32 bit platforms but have been fixed for the next release.

Installing Go 1.7

You need Go version 1.7 or higher to build Newt version 1.0.0. Currently, the latest Go version that Ubuntu installs is 1.6. Run go version to check if you have Go 1.7 installed.

Install Go version 1.7:

$sudo apt-get install golang-1.7-go
Reading package lists... Done
Unpacking golang-1.7-go (1.7.1-2ubuntu1) ...
Setting up golang-1.7-go (1.7.1-2ubuntu1) ...
$sudo ln -sf ../lib/go-1.7/bin/go /usr/bin/go
$go version
go version go1.7.1 linux/amd64

You can also download version 1.7 from

Installing from the Source Package

Create a directory and change into the directory, download the source package, and build a binary package from the source package:

mkdir newt_source
$cd newt_source
$sudo apt-get --build source newt
[sudo] password for <user>: 
Reading package lists... Done
Need to get 1,866 kB of source archives.
Get:1 latest/main newt 1.0.0-1 (dsc) [795 B]
Get:2 latest/main newt 1.0.0-1 (tar) [1,864 kB]
Get:3 latest/main newt 1.0.0-1 (diff) [2,000 B]
Fetched 1,866 kB in 1s (1,222 kB/s)
dpkg-source: warning: extracting unsigned source package (newt_1.0.0-1.dsc)
dpkg-source: info: extracting newt in newt-1.0.0
dpkg-source: info: unpacking newt_1.0.0.orig.tar.gz
dpkg-source: info: unpacking newt_1.0.0-1.debian.tar.xz


dpkg-deb: building package 'newt' in '../newt_1.0.0-1_amd64.deb'.
 dpkg-genchanges --build=any,all >../newt_1.0.0-1_amd64.changes
dpkg-genchanges: info: binary-only upload (no source code included)
 dpkg-source --after-build newt-1.0.0
dpkg-buildpackage: info: binary-only upload (no source included)
W: Can't drop privileges for downloading as file 'newt_1.0.0-1.dsc' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)

Note: You can ignore the "Permission denied" warning message at the end of the command.

Install the newt binary package that is created from the source package:

Note: The file name for the binary package has the format: newt_1.0.0-1_arch.deb, where arch is a value that identifies your host architecture.

$sudo dpkg -i newt_1.0.0-1_amd64.deb 
Selecting previously unselected package newt.
(Reading database ... 252969 files and directories currently installed.)
Preparing to unpack newt_1.0.0-1_amd64.deb ...
Unpacking newt (1.0.0-1) ...
Setting up newt (1.0.0-1) ...

Checking the Installed Version of Newt

After you have installed newt from either a Debian binary or source package, check that you are using the installed version of newt from /usr/bin.

Check the modification time of the binary and the newt tool that you are using:

$ls -l /usr/bin/newt
-rwxr-xr-x 1 root root 6919280 Apr 22 10:09 /usr/bin/newt
$which newt
$newt version
Apache Newt (incubating) version: 1.0.0

Note: If you previously built newt from source and the output of which newt shows "$GOPATH/bin/newt", you will need to move "$GOPATH/bin" after "/usr/bin" for your PATH environment variable and export it.

Get information about newt:

Newt allows you to create your own embedded application based on the Mynewt
operating system. Newt provides both build and package management in a single
tool, which allows you to compose an embedded application, and set of
projects, and then build the necessary artifacts from those projects. For more
information on the Mynewt operating system, please visit

Please use the newt help command, and specify the name of the command you want
help for, for help on how to use a specific command

  newt [flags]
  newt [command]

  newt help [<command-name>]
    For help on <command-name>.  If not specified, print this message.

Available Commands:
  build        Build one or more targets
  clean        Delete build artifacts for one or more targets
  create-image Add image header to target binary
  debug        Open debugger session to target
  info         Show project info
  install      Install project dependencies
  load         Load built target to board
  mfg          Manufacturing flash image commands
  new          Create a new project
  pkg          Create and manage packages in the current workspace
  run          build/create-image/download/debug <target>
  size         Size of target components
  sync         Synchronize project dependencies
  target       Commands to create, delete, configure, and query targets
  test         Executes unit tests for one or more packages
  upgrade      Upgrade project dependencies
  vals         Display valid values for the specified element type(s)
  version      Display the Newt version number

  -h, --help              Help for newt commands
  -j, --jobs int          Number of concurrent build jobs (default 8)
  -l, --loglevel string   Log level (default "WARN")
  -o, --outfile string    Filename to tee output to
  -q, --quiet             Be quiet; only display error output
  -s, --silent            Be silent; don't output anything
  -v, --verbose           Enable verbose output when executing commands

Use "newt [command] --help" for more information about a command.