shared-mime-info: uninstall complains that it's used but brew doesn't think so

[iamitava]

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To help us debug your issue please explain:

• What you were trying to do (and why)

  Tried to uninstall shared-mime-info since brew uses --installed reports no users.

  $ brew uses --installed shared-mime-info
  <no output>
  

• What happened (include command output)

  brew uninstall gave an error that it's being used by librsvg.

  $ brew uninstall shared-mime-info
  Error: Refusing to uninstall /usr/local/Cellar/shared-mime-info/1.9
  because it is required by librsvg 2.40.18, which is currently installed.
  

  However, brew info librsvg / brew deps librsvg don't show shared-mime-info as a dependency.

• What you expected to happen

  Expected shared-mime-info to be uninstalled.

• Step-by-step reproduction instructions (by running brew install commands)

  Not sure what installed this.

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[ilovezfs]

@tschoonj

In #5582 I added shared-mime-info as a dependency of gdk-pixbuf to fix #5482.

In #16999 you removed it. Do you know if #5482 is no longer an issue?

[tschoonj]

Have a look at https://github.com/GNOME/gdk-pixbuf/blob/master/configure.ac#L673-L677

You will see that for Darwin they set gio_can_sniff to no, which means that shared-mime-info is not a dependency.

This change was introduced in GNOME/gdk-pixbuf@4c63e6f#diff-67e997bcfdac55191033d57a16d1408a

[ilovezfs]

@tschoonj cool. So we can just rebuild librsvg and this will go away.

[ilovezfs]

@iamitava this is now fixed if you

brew update
brew reinstall librsvg
brew uninstall shared-mime-info