diff --git a/src/libcmd/command.cc b/src/libcmd/command.cc
index 2daf43aa7..2b9902677 100644
--- a/src/libcmd/command.cc
+++ b/src/libcmd/command.cc
@@ -138,7 +138,7 @@ StorePathsCommand::StorePathsCommand(bool recursive)
 {
 }
 
-void StorePathsCommand::run(ref<Store> store, BuiltPaths paths)
+void StorePathsCommand::run(ref<Store> store, BuiltPaths && paths)
 {
     StorePaths storePaths;
     for (auto& builtPath : paths)
@@ -148,7 +148,7 @@ void StorePathsCommand::run(ref<Store> store, BuiltPaths paths)
     run(store, std::move(storePaths));
 }
 
-void StorePathCommand::run(ref<Store> store, std::vector<StorePath> storePaths)
+void StorePathCommand::run(ref<Store> store, std::vector<StorePath> && storePaths)
 {
     if (storePaths.size() != 1)
         throw UsageError("this command requires exactly one store path");
diff --git a/src/libcmd/command.hh b/src/libcmd/command.hh
index dac146d24..07f398468 100644
--- a/src/libcmd/command.hh
+++ b/src/libcmd/command.hh
@@ -169,7 +169,7 @@ public:
 
     using StoreCommand::run;
 
-    virtual void run(ref<Store> store, BuiltPaths paths) = 0;
+    virtual void run(ref<Store> store, BuiltPaths && paths) = 0;
 
     void run(ref<Store> store) override;
 
@@ -182,9 +182,9 @@ struct StorePathsCommand : public BuiltPathsCommand
 
     using BuiltPathsCommand::run;
 
-    virtual void run(ref<Store> store, std::vector<StorePath> storePaths) = 0;
+    virtual void run(ref<Store> store, std::vector<StorePath> && storePaths) = 0;
 
-    void run(ref<Store> store, BuiltPaths paths) override;
+    void run(ref<Store> store, BuiltPaths && paths) override;
 };
 
 /* A command that operates on exactly one store path. */
@@ -194,7 +194,7 @@ struct StorePathCommand : public StorePathsCommand
 
     virtual void run(ref<Store> store, const StorePath & storePath) = 0;
 
-    void run(ref<Store> store, std::vector<StorePath> storePaths) override;
+    void run(ref<Store> store, std::vector<StorePath> && storePaths) override;
 };
 
 /* A helper class for registering commands globally. */
diff --git a/src/nix/copy.cc b/src/nix/copy.cc
index 0489dfe06..197c85316 100644
--- a/src/nix/copy.cc
+++ b/src/nix/copy.cc
@@ -78,7 +78,7 @@ struct CmdCopy : BuiltPathsCommand
         BuiltPathsCommand::run(store);
     }
 
-    void run(ref<Store> srcStore, BuiltPaths paths) override
+    void run(ref<Store> srcStore, BuiltPaths && paths) override
     {
         ref<Store> dstStore = dstUri.empty() ? openStore() : openStore(dstUri);
 
diff --git a/src/nix/make-content-addressable.cc b/src/nix/make-content-addressable.cc
index f5bdc7e65..12f303a10 100644
--- a/src/nix/make-content-addressable.cc
+++ b/src/nix/make-content-addressable.cc
@@ -25,7 +25,7 @@ struct CmdMakeContentAddressable : StorePathsCommand, MixJSON
           ;
     }
 
-    void run(ref<Store> store, StorePaths storePaths) override
+    void run(ref<Store> store, StorePaths && storePaths) override
     {
         auto paths = store->topoSortPaths(StorePathSet(storePaths.begin(), storePaths.end()));
 
diff --git a/src/nix/path-info.cc b/src/nix/path-info.cc
index 518cd5568..3743d7504 100644
--- a/src/nix/path-info.cc
+++ b/src/nix/path-info.cc
@@ -79,7 +79,7 @@ struct CmdPathInfo : StorePathsCommand, MixJSON
         std::cout << fmt("\t%6.1f%c", res, idents.at(power));
     }
 
-    void run(ref<Store> store, StorePaths storePaths) override
+    void run(ref<Store> store, StorePaths && storePaths) override
     {
         size_t pathLen = 0;
         for (auto & storePath : storePaths)
diff --git a/src/nix/realisation.cc b/src/nix/realisation.cc
index d59e594df..dfa8ff449 100644
--- a/src/nix/realisation.cc
+++ b/src/nix/realisation.cc
@@ -44,7 +44,7 @@ struct CmdRealisationInfo : BuiltPathsCommand, MixJSON
 
     Category category() override { return catSecondary; }
 
-    void run(ref<Store> store, BuiltPaths paths) override
+    void run(ref<Store> store, BuiltPaths && paths) override
     {
         settings.requireExperimentalFeature("ca-derivations");
         RealisedPath::Set realisations;
diff --git a/src/nix/sigs.cc b/src/nix/sigs.cc
index c64b472b6..43e0d9148 100644
--- a/src/nix/sigs.cc
+++ b/src/nix/sigs.cc
@@ -27,7 +27,7 @@ struct CmdCopySigs : StorePathsCommand
         return "copy store path signatures from substituters";
     }
 
-    void run(ref<Store> store, StorePaths storePaths) override
+    void run(ref<Store> store, StorePaths && storePaths) override
     {
         if (substituterUris.empty())
             throw UsageError("you must specify at least one substituter using '-s'");
@@ -113,7 +113,7 @@ struct CmdSign : StorePathsCommand
         return "sign store paths";
     }
 
-    void run(ref<Store> store, StorePaths storePaths) override
+    void run(ref<Store> store, StorePaths && storePaths) override
     {
         if (secretKeyFile.empty())
             throw UsageError("you must specify a secret key file using '-k'");
diff --git a/src/nix/store-delete.cc b/src/nix/store-delete.cc
index 10245978e..e4a3cb554 100644
--- a/src/nix/store-delete.cc
+++ b/src/nix/store-delete.cc
@@ -30,7 +30,7 @@ struct CmdStoreDelete : StorePathsCommand
           ;
     }
 
-    void run(ref<Store> store, std::vector<StorePath> storePaths) override
+    void run(ref<Store> store, std::vector<StorePath> && storePaths) override
     {
         for (auto & path : storePaths)
             options.pathsToDelete.insert(path);
diff --git a/src/nix/store-repair.cc b/src/nix/store-repair.cc
index 1c7a4392e..8fcb3639a 100644
--- a/src/nix/store-repair.cc
+++ b/src/nix/store-repair.cc
@@ -17,7 +17,7 @@ struct CmdStoreRepair : StorePathsCommand
           ;
     }
 
-    void run(ref<Store> store, std::vector<StorePath> storePaths) override
+    void run(ref<Store> store, std::vector<StorePath> && storePaths) override
     {
         for (auto & path : storePaths)
             store->repairPath(path);
diff --git a/src/nix/verify.cc b/src/nix/verify.cc
index f5a576064..e92df1303 100644
--- a/src/nix/verify.cc
+++ b/src/nix/verify.cc
@@ -59,7 +59,7 @@ struct CmdVerify : StorePathsCommand
           ;
     }
 
-    void run(ref<Store> store, StorePaths storePaths) override
+    void run(ref<Store> store, StorePaths && storePaths) override
     {
         std::vector<ref<Store>> substituters;
         for (auto & s : substituterUris)