conf/generator: support overriding generated RPM summary

README.md

@@ -15,6 +15,11 @@ default settings (`[DEFAULT]`) and target-specific settings (i.e. `[fedora]`).
 
 These configuration options are available right now:
 
+- `summary`: override the generated summary for the RPM package for cases where
+  generating a summary from the crate's description fails
+- `supported-arches`: conditionally build and run tests only on specific
+  architectures (mostly useful for libraries with limited cross-platform
+  support - applications need to use `ExcludeArch` or `ExclusiveArch` instead)
 - `all-features`: enable all cargo features when generating `BuildRequires`,
   building the crate, and running cargo tests (defaults to `false`; setting this
   value to `true` is equivalent to supplying the `--all-features` CLI flag)

rust2rpm/conf.py

@@ -22,6 +22,7 @@ class Rust2RpmConf:
     def __init__(
         self,
         *,
+        summary: Optional[str] = None,
         supported_arches: list[str] = None,
         all_features: bool = False,
         unwanted_features: list[str] = None,
@@ -31,6 +32,7 @@ class Rust2RpmConf:
         bin_requires: list[str] = None,
         lib_requires: dict[Optional[str], list[str]] = None,
     ):
+        self.summary = summary
         self.supported_arches: list[str] = supported_arches or list()
         self.all_features: bool = all_features
         self.unwanted_features: list[str] = unwanted_features or list()
@@ -47,7 +49,8 @@ class Rust2RpmConf:
         # order of items in the list is consistent:
         # lists are sorted when parsing rust2rpm.conf files
         return (
-            self.supported_arches == other.supported_arches
+            self.summary == other.summary
+            and self.supported_arches == other.supported_arches
             and self.all_features == other.all_features
             and self.unwanted_features == other.unwanted_features
             and self.enabled_features == other.enabled_features
@@ -82,6 +85,7 @@ class Rust2RpmConf:
         # validate configuration file
         valid_targets = ["fedora", "mageia", "opensuse", "plain"]
         valid_keys = [
+            "summary",
             "supported-arches",
             "all-features",
             "unwanted-features",
@@ -107,6 +111,9 @@ class Rust2RpmConf:
         # parse configuration and validate settings
         settings = dict()
 
+        if summary := merged.get("summary"):
+            settings["summary"] = summary
+
         if supported_arches := merged.get("supported-arches"):
             settings["supported_arches"] = to_list(supported_arches, False)
 

rust2rpm/generator.py

@@ -185,7 +185,7 @@ def spec_render_crate(
         # Parameters for RPM package metadata
         "rpm_name": rpm_name,
         "rpm_version": Version.parse(package.version).to_rpm(),
-        "rpm_summary": summary,
+        "rpm_summary": distconf.summary or summary,
         "rpm_description": description,
         "rpm_license": rpm_license,
         "rpm_license_comments": rpm_license_comments,
@@ -318,7 +318,7 @@ def spec_render_workspace(
         # Parameters for RPM package metadata
         "rpm_name": rpm_name,
         "rpm_version": rpm_version,
-        "rpm_summary": rpm_summary,
+        "rpm_summary": distconf.summary or rpm_summary,
         "rpm_description": rpm_description,
         "rpm_license": rpm_license_tag,
         "rpm_license_comments": rpm_license_comments,