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@@ -481,6 +481,7 @@ class Installer
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}
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$operations = $this->movePluginsToFront($operations);
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+ $operations = $this->moveUninstallsToFront($operations);
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foreach ($operations as $operation) {
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// collect suggestions
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@@ -591,6 +592,26 @@ class Installer
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return array_merge($installerOps, $operations);
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}
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+ /**
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+ * Removals of packages should be executed before installations in
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+ * case two packages resolve to the same path (due to custom installers)
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+ *
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+ * @param OperationInterface[] $operations
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+ * @return OperationInterface[] reordered operation list
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+ */
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+ private function moveUninstallsToFront(array $operations)
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+ {
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+ $uninstOps = array();
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+ foreach ($operations as $idx => $op) {
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+ if ($op instanceof UninstallOperation) {
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+ $uninstOps[] = $op;
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+ unset($operations[$idx]);
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+ }
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+ }
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+
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+ return array_merge($uninstOps, $operations);
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+ }
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+
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private function createPool($withDevReqs)
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{
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$minimumStability = $this->package->getMinimumStability();
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