But if you're using Debian you need to decide what is more important to you. Sure using apt is cleaner, from a system standpoint. So that is another perfectly valid way to install the latest version. However, composer is written entirely in php - so you could just as easily use composers install script to install it manually, on top of your existing system (as per the link in my previous post). But the trade-off in using software from testing, unstable, or experimental is that you may occasionally experience breakages, bugs and/or instability. So if you want to install a newer version via apt, you will have to enable one or more of the repo's from Debian's other branches (testing, unstable, experimental).

Again, typically the software in Debian stable just gets back-ported bug-fixes and security updates. So if you're using Debian stable, you're almost certainly not going to see a newer version of composer until the next version of Debian Stable is released. Software in stable usually only gets updated to a newer version when the 'testing' branch is finally deemed ready for the next release - Then whatever is in testing ends up becoming the next release of Debian Stable. That will allow you to install it using apt.īut it takes a long time for newer versions of packages to end up in apt in Debian Stable. So if you want to use apt to install composer - you either have to stick with the old version that is in stable, or enable one of the other repos (testing, unstable or experimental) in order to be able to use a slightly newer version. Eventually 2.11 will end up being moved from experimental and Unstable, before ending up in Debian testing.

Install composer debian 10