core: reference configs by absolute instead of canonical paths

changelog/next.md

@@ -1,3 +1,14 @@
+## Breaking Changes
+
+### Config paths are no longer canonicalized
+
+This fixes nix configs changing shell-ids on rebuild as the shell id is now derived from
+the symlink path. Configs with a symlink in their path will have a different shell id.
+
+Shell ids are used to derive the default config / state / cache folders, so those files
+will need to be manually moved if using a config behind a symlinked path without an explicitly
+set shell id.
+
 ## New Features
 
 - Added support for creating wayland idle inhibitors.

src/core/scan.cpp

@@ -163,7 +163,7 @@ bool QmlScanner::scanQmlFile(const QString& path, bool& singleton, bool& interna
 		qCDebug(logQmlScanner) << "Found imports" << imports;
 	}
 
-	auto currentdir = QDir(QFileInfo(path).canonicalPath());
+	auto currentdir = QDir(QFileInfo(path).absolutePath());
 
 	// the root can never be a singleton so it dosent matter if we skip it
 	this->scanDir(currentdir.path());
@@ -179,9 +179,9 @@ bool QmlScanner::scanQmlFile(const QString& path, bool& singleton, bool& interna
 		}
 
 		auto pathInfo = QFileInfo(ipath);
-		auto cpath = pathInfo.canonicalFilePath();
+		auto cpath = pathInfo.absoluteFilePath();
 
-		if (cpath.isEmpty()) {
+		if (!pathInfo.exists()) {
 			qCWarning(logQmlScanner) << "Ignoring unresolvable import" << ipath << "from" << path;
 			continue;
 		}

src/core/scan.hpp

@@ -16,9 +16,7 @@ public:
 	QmlScanner() = default;
 	QmlScanner(const QDir& rootPath): rootPath(rootPath) {}
 
-	// path must be canonical
 	void scanDir(const QString& path);
-
 	void scanQmlRoot(const QString& path);
 
 	QVector<QString> scannedDirs;

src/launch/command.cpp

@@ -110,7 +110,7 @@ int locateConfigFile(CommandState& cmd, QString& path) {
 					}
 
 					if (split[0].trimmed() == *cmd.config.name) {
-						path = QDir(QFileInfo(file).canonicalPath()).filePath(split[1].trimmed());
+						path = QDir(QFileInfo(file).absolutePath()).filePath(split[1].trimmed());
 						break;
 					}
 				}
@@ -140,8 +140,7 @@ int locateConfigFile(CommandState& cmd, QString& path) {
 				return -1;
 			}
 
-			path = QFileInfo(path).canonicalFilePath();
-			return 0;
+			goto rpath;
 		}
 	}
 
@@ -154,7 +153,8 @@ int locateConfigFile(CommandState& cmd, QString& path) {
 		return -1;
 	}
 
-	path = QFileInfo(path).canonicalFilePath();
+rpath:
+	path = QFileInfo(path).absoluteFilePath();
 	return 0;
 }