Merge pull request #8215 from obsidiansystems/general-repair-path

Support `repairPath` on most stores.

src/libstore/build/entry-points.cc

@@ -110,7 +110,7 @@ void Store::ensurePath(const StorePath & path)
 }
 
 
-void LocalStore::repairPath(const StorePath & path)
+void Store::repairPath(const StorePath & path)
 {
     Worker worker(*this, *this);
     GoalPtr goal = worker.makePathSubstitutionGoal(path, Repair);

src/libstore/legacy-ssh-store.cc

@@ -344,6 +344,17 @@ public:
     virtual ref<FSAccessor> getFSAccessor() override
     { unsupported("getFSAccessor"); }
 
+    /**
+     * The default instance would schedule the work on the client side, but
+     * for consistency with `buildPaths` and `buildDerivation` it should happen
+     * on the remote side.
+     *
+     * We make this fail for now so we can add implement this properly later
+     * without it being a breaking change.
+     */
+    void repairPath(const StorePath & path) override
+    { unsupported("repairPath"); }
+
     void computeFSClosure(const StorePathSet & paths,
         StorePathSet & out, bool flipDirection = false,
         bool includeOutputs = false, bool includeDerivers = false) override

src/libstore/local-store.hh

@@ -240,8 +240,6 @@ public:
 
     void vacuumDB();
 
-    void repairPath(const StorePath & path) override;
-
     void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
 
     /**

src/libstore/remote-store.hh

@@ -137,6 +137,17 @@ public:
 
     bool verifyStore(bool checkContents, RepairFlag repair) override;
 
+    /**
+     * The default instance would schedule the work on the client side, but
+     * for consistency with `buildPaths` and `buildDerivation` it should happen
+     * on the remote side.
+     *
+     * We make this fail for now so we can add implement this properly later
+     * without it being a breaking change.
+     */
+    void repairPath(const StorePath & path) override
+    { unsupported("repairPath"); }
+
     void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
 
     void queryMissing(const std::vector<DerivedPath> & targets,

src/libstore/store-api.hh

@@ -679,8 +679,7 @@ public:
      * Repair the contents of the given path by redownloading it using
      * a substituter (if available).
      */
-    virtual void repairPath(const StorePath & path)
-    { unsupported("repairPath"); }
+    virtual void repairPath(const StorePath & path);
 
     /**
      * Add signatures to the specified store path. The signatures are