aur_only extended to all helpers

Add diff support in check mode

README.md

@@ -12,19 +12,18 @@ The following helpers are supported and automatically selected, if present, in t
 - [makepkg](https://wiki.archlinux.org/index.php/makepkg)
 
 ## Options
-|parameter      |required |default |choices                                            |comments|
-|---            |---      |---     |---                                                |---|
-|name           |no       |        |                                                   |Name or list of names of the package(s) to install or upgrade.|
-|upgrade        |no       |no      |yes, no                                            |Whether or not to upgrade whole system.|
-|use            |no       |auto    |auto, yay, pacaur, trizen, pikaur, aurman, makepkg |The helper to use, 'auto' uses the first known helper found and makepkg as a fallback.|
-|skip_installed |no       |no      |yes, no                                            |Skip operations if the package is present.|
-|aur_only       |no       |no      |yes, no                                            |Limit operation to the AUR. Compatible with yay, pacaur, aurman and trizen.|
-|skip_pgp_check |no       |no      |yes, no                                            |Only valid with makepkg. Skip PGP signatures verification of source file, useful when installing packages without GnuPG properly configured.|
-|ignore_arch    |no       |no      |yes, no                                            |Only valid with makepkg. Ignore a missing or incomplete arch field, useful when the PKGBUILD does not have the arch=('yourarch') field.|
+|Parameter      |Choices/**Default**                                    |Comments|
+|---            |---                                                |---|
+|name           |                                                   |Name or list of names of the package(s) to install or upgrade.|
+|state          |**present**, latest                                    |Desired state of the package, 'present' skips operations if the package is already installed.|
+|upgrade        |yes, **no**                                            |Whether or not to upgrade whole system.|
+|use            |**auto**, yay, pacaur, trizen, pikaur, aurman, makepkg |The helper to use, 'auto' uses the first known helper found and makepkg as a fallback.|
+|aur_only       |yes, **no**                                            |Limit helper operation to the AUR.|
+|skip_pgp_check |yes, **no**                                            |Only valid with makepkg. Skip PGP signatures verification of source file, useful when installing packages without GnuPG properly configured.|
+|ignore_arch    |yes, **no**                                            |Only valid with makepkg. Ignore a missing or incomplete arch field, useful when the PKGBUILD does not have the arch=('yourarch') field.|
 
 ### Note
 * Either *name* or *upgrade* is required, both cannot be used together.
-* *skip_installed* cannot be used with *upgrade*.
 * In the *use*=*auto* mode, makepkg is used as a fallback if no known helper is found.
 
 ## Installing
@@ -68,37 +67,13 @@ dependencies:
 
 ## Usage
 ### Notes
-* The scope of this module is installation and update from the AUR; for package removal or system upgrade from the official repositories, it is recommended to use the official *pacman* module.
-* The *--needed* parameter of the helper is systematically used, it means if a package is up to date, it is not built and reinstalled.
-
-### Examples
-Use it in a task, as in the following examples:
-```
-# Install trizen using makepkg, skip if trizen is already installed
-- aur: name=trizen use=makepkg skip_installed=true
-  become: yes
-  become_user: aur_builder
-
-# Install package_name using the first known helper found
-- aur: name=package_name
-  ...
-
-# Install package_name_1 and package_name_2 using trizen
-- aur:
-    use: trizen
-    name:
-      - package_name_1
-      - package_name_2
-  ...
-
-# Upgrade - using pacaur
-- aur: upgrade=yes use=pacaur
-  ...
-```
+* The scope of this module is installation and update from the AUR; for package removal or for updates from the repositories, it is recommended to use the official *pacman* module.
+* The *--needed* parameter of the helper is systematically used, it means if a package is up-to-date, it is not built and reinstalled.
 
 ### Create the "aur_builder" user
-While Ansible expects to SSH as root, AUR helpers do not allow executing operations as root, they all fail with "you cannot perform this operation as root". It is therefore recommended to create a user, let's call it *aur_builder*, that has no need for password with pacman in sudoers.
-This can be done in Ansible with the following actions:
+While Ansible expects to SSH as root, makepkg or AUR helpers do not allow executing operations as root, they fail with "you cannot perform this operation as root". It is therefore recommended to create a user, which is non-root but has no need for password with pacman in sudoers, let's call it *aur_builder*.
+
+This user can be created in an Ansible task with the following actions:
 ```
 - user:
     name: aur_builder
@@ -109,3 +84,27 @@ This can be done in Ansible with the following actions:
     create: yes
     validate: 'visudo -cf %s'
 ```
+
+### Examples
+Use it in a task, as in the following examples:
+```
+# Install trizen using makepkg, skip if it is already installed
+- aur: name=trizen use=makepkg state=present
+  become: yes
+  become_user: aur_builder
+
+# Install package_name using the first known helper found
+- aur: name=package_name
+  become: yes
+  become_user: aur_builder
+
+# Install package_name_1 and package_name_2 using yay
+- aur:
+    use: yay
+    name:
+      - package_name_1
+      - package_name_2
+
+# Upgrade the system using yay, only act on AUR packages, note that dependency resolving will still include repository packages
+- aur: upgrade=yes use=yay aur_only=yes
+```

library/aur.py

@@ -25,6 +25,12 @@ options:
         description:
             - Name or list of names of the package(s) to install or upgrade.
 
+    state:
+        description:
+            - Desired state of the package.
+        default: present
+        choices: [ present, latest ]
+
     upgrade:
         description:
             - Whether or not to upgrade whole system.
@@ -37,12 +43,6 @@ options:
         default: auto
         choices: [ auto, yay, pacaur, trizen, pikaur, aurman, makepkg ]
 
-    skip_installed:
-        description:
-            - Skip operations if the package is present.
-        type: bool
-        default: no
-
     skip_pgp_check:
         description:
             - Only valid with makepkg.
@@ -60,7 +60,7 @@ options:
 
     aur_only:
         description:
-            - Limit operation to the AUR. Compatible with yay, aurman, pacaur and trizen.
+            - Limit helper operation to the AUR.
 notes:
   - When used with a `loop:` each package will be processed individually,
     it is much more efficient to pass the list directly to the `name` option.
@@ -75,7 +75,7 @@ helper:
 
 EXAMPLES = '''
 - name: Install trizen using makepkg, skip if trizen is already installed
-  aur: name=trizen use=makepkg skip_installed=true
+  aur: name=trizen use=makepkg state=present
   become: yes
   become_user: aur_builder
 '''
@@ -92,7 +92,7 @@ use_cmd = {
     'makepkg': ['makepkg', '--syncdeps', '--install', '--noconfirm', '--needed']
 }
 
-has_aur_option = ['yay', 'pacaur', 'trizen', 'aurman']
+has_aur_option = ['yay', 'pacaur', 'trizen', 'pikaur', 'aurman']
 
 
 def package_installed(module, package):
@@ -108,11 +108,17 @@ def check_packages(module, packages):
     Inform the user what would change if the module were run
     """
     would_be_changed = []
+    diff = {
+        'before': '',
+        'after': '',
+    }
 
     for package in packages:
         installed = package_installed(module, package)
         if not installed:
             would_be_changed.append(package)
+            if module._diff:
+                diff['after'] += package + "\n"
 
     if would_be_changed:
         status = True
@@ -126,7 +132,7 @@ def check_packages(module, packages):
             message = 'all packages are already installed'
         else:
             message = 'package is already installed'
-    module.exit_json(changed=status, msg=message)
+    module.exit_json(changed=status, msg=message, diff=diff)
 
 
 def install_with_makepkg(module, package):
@@ -140,22 +146,15 @@ def install_with_makepkg(module, package):
         return (1, '', 'package {} not found'.format(package))
     result = result['results'][0]
     f = open_url('https://aur.archlinux.org/{}'.format(result['URLPath']))
-    current_path = os.getcwd()
     with tempfile.TemporaryDirectory() as tmpdir:
-        os.chdir(tmpdir)
-        tar_file = '{}.tar.gz'.format(result['Name'])
-        with open(tar_file, 'wb') as out:
-            out.write(f.read())
-        tar = tarfile.open(tar_file)
-        tar.extractall()
+        tar = tarfile.open(mode='r|*', fileobj=f)
+        tar.extractall(tmpdir)
         tar.close()
-        os.chdir(format(result['Name']))
         if module.params['skip_pgp_check']:
             use_cmd['makepkg'].append('--skippgpcheck')
         if module.params['ignore_arch']:
             use_cmd['makepkg'].append('--ignorearch')
-        rc, out, err = module.run_command(use_cmd['makepkg'], check_rc=True)
-        os.chdir(current_path)
+        rc, out, err = module.run_command(use_cmd['makepkg'], cwd=os.path.join(tmpdir, result['Name']), check_rc=True)
     return (rc, out, err)
 
 
@@ -174,7 +173,7 @@ def upgrade(module, use, aur_only):
     )
 
 
-def install_packages(module, packages, use, skip_installed, aur_only):
+def install_packages(module, packages, use, state, aur_only):
     """
     Install the specified packages
     """
@@ -183,7 +182,7 @@ def install_packages(module, packages, use, skip_installed, aur_only):
     changed_iter = False
 
     for package in packages:
-        if skip_installed:
+        if state == 'present':
             if package_installed(module, package):
                 rc = 0
                 continue
@@ -210,6 +209,10 @@ def main():
             'name': {
                 'type': 'list',
             },
+            'state': {
+                'default': 'present',
+                'choices': ['present', 'latest'],
+            },
             'ignore_arch': {
                 'default': False,
                 'type': 'bool',
@@ -222,10 +225,6 @@ def main():
                 'default': 'auto',
                 'choices': ['auto'] + list(use_cmd.keys()),
             },
-            'skip_installed': {
-                'default': False,
-                'type': 'bool',
-            },
             'skip_pgp_check': {
                 'default': False,
                 'type': 'bool',
@@ -254,13 +253,13 @@ def main():
     else:
         use = params['use']
 
-    if params['upgrade'] and (params['name'] or params['skip_installed'] or use == 'makepkg'):
+    if params['upgrade'] and (params['name'] or use == 'makepkg'):
         module.fail_json(msg="Upgrade cannot be used with this option.")
     else:
         if params['upgrade']:
             upgrade(module, use, params['aur_only'])
         else:
-            install_packages(module, params['name'], use, params['skip_installed'], params['aur_only'])
+            install_packages(module, params['name'], use, params['state'], params['aur_only'])
 
 
 if __name__ == '__main__':