Set VScodium flatpak as default diff tool

[laguill]

What exactly are you trying to do?

I would like to set vscodium flatpak as my default diff tool.
I already have an alias

# codium
alias codium='flatpak run com.vscodium.codium'

Here is the content of my chezmoi.toml

[diff]
command = "flatpak run com.vscodium.codium" # Tried also with codium
args = ["--wait", "--diff"]

When I run chezmoi diff ~/.bashrc I am getting this error

chezmoi: .bashrc: exec: "flatpak run com.vscodium.codium": executable file not found in $PATH

Thanks for your help

• I have read chezmoi's user guide, and not found the answer.
• I have searched chezmoi's reference guide, and not found the answer.

[KapJI]

"flatpak" is the command, everything else is args.

[twpayne]

"flatpak" is the command, everything else is args.

Exactly. The config needs to be

[diff]
    command = "flatpak"
    args = ["run", "com.vscodium.codium", "--wait", "--diff"]

[laguill]

Thansk now codium is opening but I still have an error on the window

Shoud I edit some filesystem variable with flatseal ? or something else ?

[halostatue]

You may want to change your command to "echo" and see what the parameters are and then try to call flatpak with that. From this point, though, it's purely a flatpak issue.

[laguill]

ok so I changed my chezmoi.toml file with

[diff]
    command = "echo"
    args = ["flatpak", "run", "com.vscodium.codium", "--wait", "--diff"]

now here is the output of chezmoi diff

flatpak run com.vscodium.codium --wait --diff /home/laguill/.bashrc /tmp/chezmoi-diff848018656/.bashrc

I tried to add the ~/.local/share/chezmoi to codium but without better results

[laguill]

I manually tried to diff both files and did not get any error
flatpak run com.vscodium.codium --wait --diff ~/.bashrc ~/.local/share/chezmoi/dot_bashrc

[halostatue]

Yes. chezmoi diff always uses a temporary file because it needs to compare the result of templating.

You will need to determine what is required to give flatpak access to the temporary file.

[twpayne]

You will need to determine what is required to give flatpak access to the temporary file.

You can also set chezmoi's tempDir configuration variable to a directory that Flatpak permits VSCodium to access.

[laguill]

It seams that flatpak does not allowed /tmp
For cleaness or security I am not really sure see issue flatpak#3438

How do you change tempDir to /var/tmp ?

[twpayne]

How do you change tempDir to /var/tmp ?

Put

tempDir = "/var/tmp"

in ~/.config/chezmoi/chezmoi.toml. Make sure it's near the start of the file, in the top level config section.

[laguill]

It is working now thank you for your help

Here is the content of ~/.config/chezmoi/chezmoi.toml

tempDir = "/var/tmp"

[diff]
    command = "flatpak"
    args = ["run", "--user", "com.vscodium.codium", "--wait", "--diff"]