github.com/Nheko-Reborn/nheko @v0.12.1

nheko

The motivation behind the project is to provide a native desktop app for [Matrix] that feels more like a mainstream chat app ([Element], Telegram etc) and less like an IRC client.

Installation Quicklinks

Stable

For other options and details see the Installation section.

Unstable

Translations

Help us with translations so as many people as possible will be able to use nheko!

Note regarding End-to-End encryption

The current implementation is mostly stable, but it was never audited. If you rely on it for security, we can't make any guarantees.

Features

Most of the features you would expect from a chat application are missing right now but we are getting close to a more feature complete client. Specifically there is support for: - E2E encryption. - VoIP calls (voice & video, support varies by platform). - User registration. - Creating, joining & leaving rooms. - Sending & receiving invites. - Sending & receiving files and emoji (inline widgets for images, audio and file messages). - Custom stickers and emoji. - Replies with text, images and other media (and actually render them as inline widgets). - Typing notifications. - Username auto-completion. - Message & mention notifications. - Redacting messages. - Read receipts. - Presence and status messages (if enabled on the server side). - Basic communities support. - Room switcher (ctrl-K). - Light, Dark & System themes. - Creating separate profiles (command line only, use -p name). - D-Bus API to allow integration with third-party plugins (does not support Windows or macOS).

Installation

Releases

Releases for Linux (Flatpak), macOS (disk image) & Windows (x64 msix or appinstaller) can be found in the GitHub releases. The appinstaller on Windows will regularly check our servers for updates. The msix won't.

Repositories

Arch Linux

sudo pacman -Syu nheko

The development version is available in the AUR:

yay -S nheko-git # Or your favorite way of installing AUR packages

Nheko requires a secret server to run, so you'll need to install and configure a service such as KDE Wallet or GNOME Keyring if not provided by your desktop environment.

Debian (10 and above) / Ubuntu (18.04 and above)

sudo apt install nheko

Fedora

sudo dnf install nheko

Gentoo Linux

sudo eselect repository enable guru
sudo emaint sync -r guru
sudo emerge -a nheko

If you are using Gnome Keyring or KeepassXC as your secrets daemon, ensure that the keyring useflag is enabled on dev-libs/qtkeychain.

Mageia (9 and above)

sudo urpmi nheko

Nix(os)

# Imperatively: (not recommended)
nix-env -iA nixpkgs.nheko

# In an ephemeral shell: (recommended if you just want to try it out without committing to a full installation)
nix-shell -p nheko --run nheko
# Note: The above command will both install and run Nheko.
# To stop it from running immediately, just remove the `--run nheko` from the end.

Alternatively, add it to your config in one of the following ways: (recommended for long-term installation)

System-wide:

environment.systemPackages = with pkgs; [
    # ...
    nheko
    # ...
];

User-specific:

users.users.<user>.packages = with pkgs; [
    # ...
    nheko
    # ...
];

via home-manager:

programs.nheko.enable = true;

Alpine Linux (and postmarketOS)

Make sure you have the testing repositories from edge enabled. Note that this is not needed on postmarketOS.

sudo apk add nheko

openSUSE

Note: these instructions have only been tested on Tumbleweed.

First, install nheko:

sudo zypper addrepo https://download.opensuse.org/repositories/network:messaging:matrix/openSUSE_Tumbleweed/network:messaging:matrix.repo
sudo zypper ref
sudo zypper in nheko

If you want to add jdenticon support:

sudo zypper install qt-jdenticon

Flatpak

flatpak install flathub im.nheko.Nheko

Guix

guix install nheko

Steam Deck

Install nheko via the Discover app in Desktop Mode (this installs the flatpak). To also make it work in Game Mode you'll have create a wrapper script that starts kwalletd and then nheko. You can create /home/deck/nheko.sh with the following content and then add this script as a "Non-Steam Game" to Steam.

#!/bin/sh
kwalletd6&
flatpak run --env=XDG_CURRENT_DESKTOP=KDE --env=KDE_SESSION_VERSION=5 --branch=stable --arch=x86_64 --command=im.nheko.Nheko --file-forwarding im.nheko.Nheko @@u @@

macOS (10.14 and above)

with homebrew:

brew install --cask nheko

Windows

with Chocolatey:

choco install nheko-reborn

D-Bus plugins

nheko does not provide binaries for any D-Bus plugins. However, we do provide the following list of known plugins:

• nheko-krunner
• rofi-nheko

FAQ

---

Q: Why don't videos run for me on Windows?

A: You're probably missing the required video codecs, download K-Lite Codec Pack.

---

Q: What commands are supported by nheko?

A: See https://github.com/Nheko-Reborn/nheko/wiki/Commands

---

Q: Does nheko support end-to-end encryption (EE2E)?

A: Yes, see feature list

---

Q: Can I test a bleeding edge development version?

A: Checkout nightly builds https://matrix-static.neko.dev/room/!TshDrgpBNBDmfDeEGN:neko.dev/

---

Q: How do I add stickers and custom emojis?

A: Stickers and custom emojis are organized in image packs. There is one user image pack that only your account has access to and there are room image packs that are accessible by everyone in the room they are defined in. You can activate a room image pack globally to use it in any room.

To manage image packs in nheko, go to the room settings and enter the Sticker & Emote Settings. You will see the Private pack (your user image pack) and can edit it there. The Shortcode is a unique identifier you use to select the image with and the Body is the alternate text that is displayed on clients that don't support images (like the alt tag in HTML images).

If you have the necessary permissions you can create new room packs with the button at the bottom of the image pack list. They are the same as the user pack but you can create as many as you want and everyone in the room can use them. It might be a good idea to create an extra room just for your image packs to make sharing easier.

---

Q: I can't see some image types!

A: Nheko uses Qt's image plugins to render images. You might need to install additional packages to display some image types like webp. Usually those packages are called qt6-image-formats-plugins, qt6-imageformats or similar. KDE has similar plugins, that can extend the supported image types even more.

---

Build Requirements

• Qt6 (6.5 or greater). Required for overlapping hover handlers in Qml.
• CMake 3.15 or greater.
• mtxclient
• coeurl
• LMDB
• lmdb++ (0.9.14 too old)
• cmark 0.29 or greater.
• libolm
• spdlog (1.8.1 too old)
• fmt
• GStreamer 1.20.0 or greater (optional, needed for VoIP support. Pass -DVOIP=OFF to disable.).
  • Installing the gstreamer core library plus gst-plugins-base, gst-plugins-good & gst-plugins-bad is often sufficient. The qmlgl plugin though is often packaged separately. The actual plugin requirements are as follows:
  • Voice call support: dtls, opus, rtpmanager, srtp, webrtc
  • Video call support (optional): compositor, opengl, qmlgl, rtp, vpx
  • libnice
• XCB, XCB-EWMH: For screensharing support on X11 and setting window roles. Can be disabled with -DSCREENSHARE_X11=OFF.
• qtkeychain (You need at least version 0.12 for proper Gnome Keychain support. The bundled version requires libsecret, unless you pass -DLIBSECRET_SUPPORT=OFF.)
• KDSingleApplication (1.0 or greater with Qt6 support)
• A compiler that supports C++ 20:
  • Clang 16 (Only clazy 16 is tested in CI)
  • GCC 11.3 (tested on Gitlab CI)
  • MSVC 19.13 (tested on AppVeyor)

Nheko can use bundled version for most of those libraries automatically, if the versions in your distro are too old. To use them, you can enable the hunter integration by passing -DHUNTER_ENABLED=ON. It is probably wise to link those dependencies statically by passing -DBUILD_SHARED_LIBS=OFF You can select which bundled dependencies you want to use by passing various -DUSE_BUNDLED_* flags. By default all dependencies are bundled if you enable hunter. (The exception to that is OpenSSL, which is always disabled by default.) If you experience build issues and you are trying to link mtxclient library without hunter, make sure the library version(commit) as mentioned in the CMakeList.txt is used. Sometimes we have to make breaking changes in mtxclient and for that period the master branch of both repos may not be compatible.

The bundle flags are currently:

• USE_BUNDLED_SPDLOG
• USE_BUNDLED_OLM
• USE_BUNDLED_GTEST
• USE_BUNDLED_CMARK
• USE_BUNDLED_JSON
• USE_BUNDLED_OPENSSL
• USE_BUNDLED_MTXCLIENT
• USE_BUNDLED_LMDB
• USE_BUNDLED_LMDBXX
• USE_BUNDLED_COEURL
• USE_BUNDLED_LIBCURL
• USE_BUNDLED_LIBEVENT
• USE_BUNDLED_KDSINGLEAPPLICATION

A note on bundled OpenSSL: You need to explicitly enable it and it will not be using your system certificate directory by default, if you enable it. You need to override that at runtime with the SSL_CERT_FILE variable. On Windows it will still be using your system certificates though, since it loads them from the system store instead of the OpenSSL directory.

Linux (Appimage)

If you don't want to install any external dependencies, you can generate an AppImage locally using docker. It is not that well maintained though...

make docker-app-image

Arch Linux

sudo pacman -S qt6-base \
    qt6-tools \
    qt6-multimedia \
    qt6-svg \
    cmake \
    gcc \
    fontconfig \
    lmdb \
    cmark \
    qtkeychain-qt6

Debian 13 [Testing/Sid] (Nheko QT6 Version)

# Install build requirements
sudo apt install -y cmake asciidoc-base libevent-dev libspdlog-dev libre2-dev liblmdb++-dev libcurl4-openssl-dev libssl-dev libolm-dev libcmark-dev nlohmann-json3-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev libkdsingleapplication-qt6-dev
sudo apt install -y qt6-base-dev qt6-tools-dev qt6-svg-dev qt6-multimedia-dev qt6-declarative-dev qtkeychain-qt6-dev qt6-base-private-dev qt6-declarative-private-dev
# Clone nheko repository from github
sudo apt install -y git
git clone https://github.com/Nheko-Reborn/nheko && cd nheko
# Build
cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release -DUSE_BUNDLED_COEURL=1 -DUSE_BUNDLED_MTXCLIENT=1 -DUSE_BUNDLED_LMDBXX=1
cmake --build build

Debian 11-12 / Ubuntu 22.04 (Nheko QT5 11.3 Release Version)

Build requirements + qml modules needed at runtime (you may not need all of them, but the following seem to work according to reports): ```bash sudo apt install --no-install-recommends g++ cmake make zlib1g-dev libssl-dev libolm-dev liblmdb-dev libcmark-dev nlohmann-json3-dev libspdlog-dev libevent-dev libcurl4-openssl-dev libre2-dev libxcb-ewmh-dev asciidoc-base \ qt{base,declarative,tools,multimedia,quickcontrols2-}5-dev libqt6svg5-dev qt6keychain-dev qml-module-qt{gstreamer,multimedia,quick-extras,-labs-settings,graphicaleffects,quick-controls2,quick-particles2} \ libgstreamer1.0-dev libgstreamer-plugins-{base,bad}1.0-dev qtgstreamer-plugins-qt6 libnice-dev ninja-build