libcalamares: deal with QPair

Use std::pair instead. Also applies to Qt5 build.

src/libcalamares/geoip/Interface.h

@@ -12,16 +12,19 @@
 
 #include "DllMacro.h"
 
-#include <QPair>
 #include <QString>
 #include <QUrl>
 
+#include <utility>
+
 class QByteArray;
 
 namespace CalamaresUtils
 {
 namespace GeoIP
 {
+using RegionZonePairBase = std::pair< QString, QString >;
+
 /** @brief A Region, Zone pair of strings
  *
  * A GeoIP lookup returns a timezone, which is represented as a Region,
@@ -29,22 +32,22 @@ namespace GeoIP
  * pasting the strings back together with a "/" is the right thing to
  * do. The Zone **may** contain a "/" (e.g. "Kentucky/Monticello").
  */
-class DLLEXPORT RegionZonePair : public QPair< QString, QString >
+class DLLEXPORT RegionZonePair : public RegionZonePairBase
 {
 public:
     /** @brief Construct from an existing pair. */
-    explicit RegionZonePair( const QPair& p )
-        : QPair( p )
+    explicit RegionZonePair( const RegionZonePairBase& p )
+        : RegionZonePairBase( p )
     {
     }
     /** @brief Construct from two strings, like qMakePair(). */
     RegionZonePair( const QString& region, const QString& zone )
-        : QPair( region, zone )
+        : RegionZonePairBase( region, zone )
     {
     }
     /** @brief An invalid zone pair (empty strings). */
     RegionZonePair()
-        : QPair( QString(), QString() )
+        : RegionZonePairBase( QString(), QString() )
     {
     }
 

src/libcalamares/modulesystem/InstanceKey.h

@@ -13,9 +13,10 @@
 
 #include <QDebug>
 #include <QList>
-#include <QPair>
 #include <QString>
 
+#include <utility>
+
 namespace Calamares
 {
 namespace ModuleSystem
@@ -34,12 +35,14 @@ namespace ModuleSystem
  * This is supported by the *instances* configuration entry
  * in `settings.conf`.
  */
-class InstanceKey : public QPair< QString, QString >
+class InstanceKey : public std::pair< QString, QString >
 {
 public:
+    using Base = std::pair< QString, QString >;
+
     /// @brief Create an instance key from explicit module and id.
     InstanceKey( const QString& module, const QString& id )
-        : QPair( module, id )
+        : Base( module, id )
     {
         if ( second.isEmpty() )
         {
@@ -50,7 +53,7 @@ public:
 
     /// @brief Create unusual, invalid instance key
     InstanceKey()
-        : QPair( QString(), QString() )
+        : Base( QString(), QString() )
     {
     }
 

src/libcalamares/utils/CommandList.h

@@ -17,33 +17,35 @@
 #include <QVariant>
 
 #include <chrono>
+#include <utility>
 
 class KMacroExpanderBase;
 
 namespace CalamaresUtils
 {
+using CommandLineBase = std::pair< QString, std::chrono::seconds >;
 
 /**
  * Each command can have an associated timeout in seconds. The timeout
  * defaults to 10 seconds. Provide some convenience naming and construction.
  */
-struct CommandLine : public QPair< QString, std::chrono::seconds >
+struct CommandLine : public CommandLineBase
 {
     static inline constexpr std::chrono::seconds TimeoutNotSet() { return std::chrono::seconds( -1 ); }
 
     /// An invalid command line
     CommandLine()
-        : QPair( QString(), TimeoutNotSet() )
+        : CommandLineBase( QString(), TimeoutNotSet() )
     {
     }
 
     CommandLine( const QString& s )
-        : QPair( s, TimeoutNotSet() )
+        : CommandLineBase( s, TimeoutNotSet() )
     {
     }
 
     CommandLine( const QString& s, std::chrono::seconds t )
-        : QPair( s, t )
+        : CommandLineBase( s, t )
     {
     }