dnf: allow to operate on file paths (#51080)

Fixes #50843

changelogs/fragments/50843.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - dnf - allow to operate on file paths (https://github.com/ansible/ansible/issues/50843)

lib/ansible/modules/packaging/os/dnf.py

@@ -747,6 +747,13 @@ class DnfModule(YumDnf):
                     "results": []
                 }
 
+    def _whatprovides(self, filepath):
+        available = self.base.sack.query().available()
+        pkg_spec = available.filter(provides=filepath).run()
+
+        if pkg_spec:
+            return pkg_spec[0].name
+
     def _parse_spec_group_file(self):
         pkg_specs, grp_specs, module_specs, filenames = [], [], [], []
         already_loaded_comps = False  # Only load this if necessary, it's slow
@@ -758,6 +765,13 @@ class DnfModule(YumDnf):
             elif name.endswith(".rpm"):
                 filenames.append(name)
             elif name.startswith("@") or ('/' in name):
+                # like "dnf install /usr/bin/vi"
+                if '/' in name:
+                    pkg_spec = self._whatprovides(name)
+                    if pkg_spec:
+                        pkg_specs.append(pkg_spec)
+                        continue
+
                 if not already_loaded_comps:
                     self.base.read_comps()
                     already_loaded_comps = True

test/integration/targets/dnf/tasks/dnf.yml

@@ -664,3 +664,24 @@
       state: absent
 
 # end test case where disable_excludes is supported
+
+- name: Test "dnf install /usr/bin/vi"
+  block:
+    - name: Clean vim-minimal
+      dnf:
+        name: vim-minimal
+        state: absent
+
+    - name: Install vim-minimal by specifying "/usr/bin/vi"
+      dnf:
+        name: /usr/bin/vi
+        state: present
+
+    - name: Get rpm output
+      command: rpm -q vim-minimal
+      register: rpm_output
+
+    - name: Check installation was successful
+      assert:
+        that:
+          - "'vim-minimal' in rpm_output.stdout"