[Bug 1245826] [NEW] Allow applying a hook to multiple files

[Alberto Mardegan]

Public bug reported:

Currently, a click hook can be applied to a single file. However, in
some cases it might be needed for a click package to install several
files in the same directory. For instance, a click package installing a
new account plugin which provides different services (for instance, a
website could provide an e-mail service, instant messaging, file
sharing, etc.) which are represented to libaccounts via XMl files
installed to /usr/share/accounts/services (or
~/.local/share/accounts/services).

I would suggest providing the hook's "Pattern" field with a variable
holding the filename of the source file (just the base name, with the
path stripped out), so that it can be used to differentiate the symlinks
in the target directory. So one could write a Pattern like this for
libaccounts's services:

  Pattern: ${home}/.local/share/accounts/services/${id}_${basename}

Then also the manifest file should allow specifying a list of files:

"hooks": {
    "example-app": {
      "apparmor": "apparmor/example-app.json",
      "desktop": "example-app.desktop",
      "account-service": ["cool-email.service", "cool-chat.service"]
    }
  }

** Affects: click (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1245826

Title:
  Allow applying a hook to multiple files

Status in “click” package in Ubuntu:
  New

Bug description:
  Currently, a click hook can be applied to a single file. However, in
  some cases it might be needed for a click package to install several
  files in the same directory. For instance, a click package installing
  a new account plugin which provides different services (for instance,
  a website could provide an e-mail service, instant messaging, file
  sharing, etc.) which are represented to libaccounts via XMl files
  installed to /usr/share/accounts/services (or
  ~/.local/share/accounts/services).

  I would suggest providing the hook's "Pattern" field with a variable
  holding the filename of the source file (just the base name, with the
  path stripped out), so that it can be used to differentiate the
  symlinks in the target directory. So one could write a Pattern like
  this for libaccounts's services:

    Pattern: ${home}/.local/share/accounts/services/${id}_${basename}

  Then also the manifest file should allow specifying a list of files:

  "hooks": {
      "example-app": {
        "apparmor": "apparmor/example-app.json",
        "desktop": "example-app.desktop",
        "account-service": ["cool-email.service", "cool-chat.service"]
      }
    }

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