From 4f85b60383e1a15ecdbbb8f691761db041c7f77f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matt=C3=A9o=20Delabre?= <git.matteo@delab.re>
Date: Mon, 28 Nov 2022 10:47:00 -0500
Subject: [PATCH] Add provides/conflicts for perf packages

---
 docs/package.md                     | 15 +++++++++++++++
 package/linux-mainline/package      |  2 ++
 package/linux-stracciatella/package |  2 ++
 scripts/toltec/recipe.py            |  4 +++-
 4 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/docs/package.md b/docs/package.md
index fcd9690a4..b49a1d134 100644
--- a/docs/package.md
+++ b/docs/package.md
@@ -404,6 +404,21 @@ A list of packages that the current package replaces.
 Setting this field allows the current package to overwrite and take ownership of files from other packages.
 Note that the replaced packages will not be automatically uninstalled unless you also declare a conflict with them using the [`conflicts` field](#conflicts-field).
 
+#### `provides` field
+
+<table>
+    <tr>
+        <th>Required?</th>
+        <td>No, defaults to <code>()</code></th>
+    </tr>
+    <tr>
+        <th>Type</th>
+        <td>Array of strings</td>
+    </tr>
+</table>
+
+A list of virtual packages that the current package provides.
+
 #### `package()` function
 
 The `package()` function populates the `$pkgdir` directory with the files and directories that need to be installed using artifacts from the `$srcdir` directory.
diff --git a/package/linux-mainline/package b/package/linux-mainline/package
index 133ad7f3f..21d44e9de 100644
--- a/package/linux-mainline/package
+++ b/package/linux-mainline/package
@@ -63,6 +63,8 @@ linux-mainline-perf() {
     pkgdesc="Linux profiling with performance counters"
     url=https://perf.wiki.kernel.org
     section=devel
+    provides=(perf)
+    conflicts=(perf)
 
     package() {
         install -D -m 755 -t "$pkgdir"/opt/bin "$srcdir"/tools/perf/perf
diff --git a/package/linux-stracciatella/package b/package/linux-stracciatella/package
index 6aae8b2b6..882b5e4f0 100644
--- a/package/linux-stracciatella/package
+++ b/package/linux-stracciatella/package
@@ -67,6 +67,8 @@ linux-stracciatella-perf() {
     pkgdesc="Linux profiling with performance counters"
     url=https://perf.wiki.kernel.org
     section=devel
+    provides=(perf)
+    conflicts=(perf)
 
     package() {
         install -D -m 755 -t "$pkgdir"/opt/bin "$srcdir"/tools/perf/perf
diff --git a/scripts/toltec/recipe.py b/scripts/toltec/recipe.py
index e462be5ec..f7efd4bc6 100644
--- a/scripts/toltec/recipe.py
+++ b/scripts/toltec/recipe.py
@@ -343,6 +343,7 @@ class Package:  # pylint:disable=too-many-instance-attributes
     installdepends: Set[Dependency]
     conflicts: Set[Dependency]
     replaces: Set[Dependency]
+    provides: Set[Dependency]
 
     functions: bash.Functions
     custom_functions: bash.Functions
@@ -390,7 +391,7 @@ def _load_fields(self, variables: bash.Variables) -> None:
         self.license = _pop_field_string(variables, "license")
         self.variables["license"] = self.license
 
-        for field in ("installdepends", "conflicts", "replaces"):
+        for field in ("installdepends", "conflicts", "replaces", "provides"):
             field_raw = _pop_field_indexed(variables, field, [])
             self.variables[field] = field_raw
             setattr(self, field, set())
@@ -482,6 +483,7 @@ def control_fields(self) -> str:
             ("Depends", self.installdepends),
             ("Conflicts", self.conflicts),
             ("Replaces", self.replaces),
+            ("Provides", self.provides),
         ):
             if field:
                 control += (