[system/kconfigeditor] src: Use flat_map instead of map+flatten

Git commit 89eefade8a7d1b6667ef552a70dcfcb42f2aadb4 by Nicolas Fella.
Committed on 23/07/2026 at 14:27.
Pushed by nicolasfella into branch 'master'.

Use flat_map instead of map+flatten

M  +1    -2    src/entrymodel.rs
M  +3    -6    src/filesmodel.rs
M  +1    -2    src/groupsmodel.rs

https://invent.kde.org/system/kconfigeditor/-/commit/89eefade8a7d1b6667ef552a70dcfcb42f2aadb4

diff --git a/src/entrymodel.rs b/src/entrymodel.rs
index 7b2f27f..a9768f0 100644
--- a/src/entrymodel.rs
+++ b/src/entrymodel.rs
@@ -566,8 +566,7 @@ impl entrymodel::EntryModel {
 
         let configs: Vec<_> = Upcast::<QList<QString>>::upcast(&kcfg_files)
             .iter()
-            .map(|path| config::parse(&path.to_string().as_str()))
-            .flatten()
+            .flat_map(|path| config::parse(&path.to_string().as_str()))
             .filter(|config| config.kcfgfile.as_ref().is_some())
             .filter(|config| {
                 config
diff --git a/src/filesmodel.rs b/src/filesmodel.rs
index ea66548..179ff02 100644
--- a/src/filesmodel.rs
+++ b/src/filesmodel.rs
@@ -120,17 +120,14 @@ impl filesmodel::FilesModel {
 
         let configs: Vec<_> = Upcast::<QList<QString>>::upcast(&kcfg_files)
             .iter()
-            .map(|path| config::parse(path.to_string().as_str()))
-            .flatten()
+            .flat_map(|path| config::parse(path.to_string().as_str()))
             .collect();
 
         apps.extend(
             configs
                 .iter()
-                .map(|kcfg| kcfg.kcfgfile.clone())
-                .flatten()
-                .map(|file| file.name)
-                .flatten()
+                .flat_map(|kcfg| kcfg.kcfgfile.clone())
+                .flat_map(|file| file.name)
                 .collect::<HashSet<_>>()
                 .iter()
                 .map(|s| QString::from(s))
diff --git a/src/groupsmodel.rs b/src/groupsmodel.rs
index 5aa326f..8d90533 100644
--- a/src/groupsmodel.rs
+++ b/src/groupsmodel.rs
@@ -132,8 +132,7 @@ impl groupsmodel::GroupsModel {
 
         let configs: Vec<_> = Upcast::<QList<QString>>::upcast(&kcfg_files)
             .iter()
-            .map(|path| config::parse(path.to_string().as_str()))
-            .flatten()
+            .flat_map(|path| config::parse(path.to_string().as_str()))
             .filter(|config| config.kcfgfile.as_ref().is_some())
             .filter(|config| {
                 config