Installation instructions about git credentials manager for Linux

[Skrypt]

I've tried to install Git Credentials Manager under Fedora 42 but it did not work.
I found a repository that saved me time on trying to compile or use a .deb package from GCM repository.

This package installation failed with a log about missing .NET 6 runtime.
.NET 6 runtime doesn't seem to be supported by Microsoft on Linux from their documentation so I've decided to find an alternative.

The way I foudn to make my passwords to be stored properly was to use libsecret.

Configure git to use libsecret globally:

git config --global credential.helper libsecret

Install seahorse to be able to manage these secrets.

sudo dnf install seahorse

I think the documentation should be updated for Linux to make use of libsecret instead of GCM.
Unless GCM would have proper repository to install from and a clear path on how to install .NET 6 on Fedora 42.

[love-linger]

In fact, when SourceGit creates a git command process, it will overwrite this configuration:

sourcegit/src/Commands/Command.cs

Lines 151 to 159 in 0a74dd6

	private ProcessStartInfo CreateGitStartInfo(bool redirect)
	{
	var start = new ProcessStartInfo();
	start.FileName = Native.OS.GitExecutable;
	start.Arguments = "--no-pager -c core.quotepath=off -c credential.helper=manager ";
	start.UseShellExecute = false;
	start.CreateNoWindow = true;

[love-linger]

Did you try this package? https://fedora.pkgs.org/42/terra/gcm-core-0:2.6.1-1.fc42.x86_64.rpm.html

[Skrypt]

I tried with this one:

https://copr.fedorainfracloud.org/coprs/matthickford/git-credential-manager/

When I execute it I get this error:

sudo dnf install git-credential-manager
...
Problem: conflicting requests
  - nothing provides dotnet-runtime-6.0 needed by git-credential-manager-2.0.785-4.fc38.x86_64 from copr:copr.fedorainfracloud.org:matthickford:git-credential-manager
You can try to add to command line:
  --skip-broken to skip uninstallable packages

And dotnet-runtime-6 is EOL on https://learn.microsoft.com/en-us/dotnet/core/install/linux-fedora?tabs=dotnet9#supported-distributions

[Skrypt]

Tried to install your suggested package and got this:

sudo dnf install gcm-core
Updating and loading repositories:
 terra.fyralabs.com_terra.repo - Created by dnf5 config-manager                                        ???% |  83.6 KiB/s |  33.3 KiB |  00m00s
>>> Status code: 404 for https://terra.fyralabs.com/terra.repo/repodata/repomd.xml (IP: 172.67.201.179) - https://terra.fyralabs.com/terra.repo
>>> Status code: 404 for https://terra.fyralabs.com/terra.repo/repodata/repomd.xml (IP: 172.67.201.179) - https://terra.fyralabs.com/terra.repo
>>> Status code: 404 for https://terra.fyralabs.com/terra.repo/repodata/repomd.xml (IP: 172.67.201.179) - https://terra.fyralabs.com/terra.repo
>>> Status code: 404 for https://terra.fyralabs.com/terra.repo/repodata/repomd.xml (IP: 172.67.201.179) - https://terra.fyralabs.com/terra.repo
>>> Librepo error: Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried                                     
Repositories loaded.
Failed to resolve the transaction:
No match for argument: gcm-core
You can try to add to command line:
  --skip-unavailable to skip unavailable packages

[love-linger]

I've pushed a new commit that supports to use git-credential-libsecret instead of git-credential-manager. You can change the credential helper from Preferences window.

[Skrypt]

More on this. I found how to install it on Fedora by using this documentation:

https://github.com/git-ecosystem/git-credential-manager/blob/release/docs/install.md#net-tool
https://github.com/git-ecosystem/git-credential-manager/blob/release/docs/credstores.md#freedesktoporg-secret-service-api

dotnet tool install -g git-credential-manager # installs GCM as a dotnet tool
git-credential-manager configure # initializes GCM
git config --global credential.helper manager # sets GCM as default credential helper
git config --global credential.credentialStore secretservice # makes use of libsecret through GCM

Basically, you can install GCM as a Dotnet Tool. No need to install this from a DNF repository.