Fix default PDF reader when open in GNOME

[kachick]

Fix PDF default reader with removing conflict implementation which introduced in GH-953

[kachick]

> makers apply 'kachick@nixos-desktop'
[cargo-make] INFO - makers 0.37.23
[cargo-make] INFO -
[cargo-make] INFO - Build File: Makefile.toml
[cargo-make] INFO - Task: apply
[cargo-make] INFO - Profile: development
[cargo-make] INFO - Execute Command: "nix" "run" ".#home-manager" "--" "switch" "-b" "backup" "--flake" ".#kachick@nixos-desktop" "--show-trace"
Home Managerの有効化を開始しました
checkFilesChanged を有効化しています
checkLinkTargets を有効化しています
writeBoundary を有効化しています
createGpgHomedir を有効化しています
migrateGhAccounts を有効化しています
linkGeneration を有効化しています
/home/kachick から無効なリンクを消去しています
変更されていないので最新の世代 163 のプロファイルを再利用します
ホームファイルのリンクを /home/kachick に作っています
batCache を有効化しています
No themes were found in '/home/kachick/.config/bat/themes', using the default set
No syntaxes were found in '/home/kachick/.config/bat/syntaxes', using the default set.
Writing theme set to /home/kachick/.cache/bat/themes.bin ... okay
Writing syntax set to /home/kachick/.cache/bat/syntaxes.bin ... okay
Writing metadata to folder /home/kachick/.cache/bat ... okay
createXdgUserDirectories を有効化しています
installPackages を有効化しています
replacing old 'home-manager-path'
installing 'home-manager-path'
dconfSettings を有効化しています
ensureLimaSharedTempdir を有効化しています
onFilesChange を有効化しています
refreshZcompdumpCache を有効化しています
registerStartingLima を有効化しています
INFO[0000] The autostart file "/home/kachick/.config/systemd/user/lima-vm@default.service" has been created or updated
reloadSystemd を有効化しています
setDefaultBrowser を有効化しています
/nix/store/9v7x5vabddvggsmy4gyim551gww2hsan-xdg-utils-1.2.1/bin/xdg-mime: line 1002: /nix/store/4zjk2h57wdwpqfmxd6wz5vjwzw3h1w48-hm_mimeapps.list.new: Read-only file system
/nix/store/9v7x5vabddvggsmy4gyim551gww2hsan-xdg-utils-1.2.1/bin/xdg-mime: line 1002: /nix/store/4zjk2h57wdwpqfmxd6wz5vjwzw3h1w48-hm_mimeapps.list.new: Read-only file system
Error while executing command, exit code: 4

Works after this change, but what is this error message... 🤔

[kachick]

Require similar solution like https://github.com/nix-community/home-manager/pull/4815/files?w=1 ?

[kachick]

L1001-1003

    [ -f "$out_file" ] || /nix/store/b1wvkjx96i3s7wblz38ya0zr8i93zbc5-coreutils-9.5/bin/touch "$out_file"
    /nix/store/nnin69nrnrrmnv2scbwyfkgh1rf51gh1-gawk-5.3.1/bin/awk -v mimetype="$2" -v application="$1" '
    BEGIN {

[kachick]

Full of the awk

    /nix/store/nnin69nrnrrmnv2scbwyfkgh1rf51gh1-gawk-5.3.1/bin/awk -v mimetype="$2" -v application="$1" '
    BEGIN {
        prefix=mimetype "="
        indefault=0
        added=0
        blanks=0
        found=0
    }
    {
        suppress=0
        if (index($0, "[Default Applications]") == 1) {
            indefault=1
            found=1
        } else if (index($0, "[") == 1) {
            if (!added && indefault) {
                print prefix application
                added=1
            }
            indefault=0
        } else if ($0 == "") {
            suppress=1
            blanks++
        } else if (indefault && !added && index($0, prefix) == 1) {
                $0=prefix application
                added=1
        }
        if (!suppress) {
            while (blanks > 0) {
                print ""
                blanks--
            }
            print $0
        }
    }
    END {
        if (!added) {
            if (!found) {
                print ""
                print "[Default Applications]"
            }
            print prefix application
        }
        while (blanks > 0) {
            print ""
            blanks--
        }
    }
' "$out_file" > "$out_file.new" && /nix/store/b1wvkjx96i3s7wblz38ya0zr8i93zbc5-coreutils-9.5/bin/mv "$out_file.new" "$out_file"

[kachick]

It looks like xdg-mime use in home-manager mismatch.

And the content is much simple.

So dropping this dependency of home-manager module might be good?

> bat /home/kachick/.local/share/applications/mimeapps.list
[Added Associations]

[Default Applications]
application/pdf=google-chrome.desktop;firefox.desktop

[Removed Associations]

[kachick]

Might be related to nix-community/home-manager#1213?

[kachick]

When pointing the "$out_file.new" to /nix/store/, it would be readonly...

But why? the home-manager module looks not using the xdg-mime https://github.com/nix-community/home-manager/blob/release-24.11/modules/misc/xdg-mime-apps.nix

[kachick]

But why? the home-manager module looks not using the xdg-mime

Oops... This conflict made by my code...

dotfiles/home-manager/desktop.nix

Lines 8 to 15 in c3dbe6b

	home = {
	activation = {
	# defaultApplications in xdg=* modules do not support except mime types. So required this for hotkey use
	setDefaultBrowser = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
	run '${pkgs.xdg-utils}/bin/xdg-settings' set 'default-web-browser' 'google-chrome.desktop'
	'';
	};
	};

#953