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-rw-r--r--src/libstore/binary-cache-store.hh31
-rw-r--r--src/libstore/legacy-ssh-store.cc37
-rw-r--r--src/libstore/store-api.cc4
-rw-r--r--src/libstore/store-api.hh35
4 files changed, 31 insertions, 76 deletions
diff --git a/src/libstore/binary-cache-store.hh b/src/libstore/binary-cache-store.hh
index 6bc83fc50ca1..953f3b90af46 100644
--- a/src/libstore/binary-cache-store.hh
+++ b/src/libstore/binary-cache-store.hh
@@ -72,24 +72,11 @@ public:
 
     bool isValidPathUncached(const Path & path) override;
 
-    PathSet queryAllValidPaths() override
-    { unsupported(); }
-
     void queryPathInfoUncached(const Path & path,
         Callback<std::shared_ptr<ValidPathInfo>> callback) override;
 
-    void queryReferrers(const Path & path,
-        PathSet & referrers) override
-    { unsupported(); }
-
-    PathSet queryDerivationOutputs(const Path & path) override
-    { unsupported(); }
-
-    StringSet queryDerivationOutputNames(const Path & path) override
-    { unsupported(); }
-
     Path queryPathFromHashPart(const string & hashPart) override
-    { unsupported(); }
+    { unsupported("queryPathFromHashPart"); }
 
     bool wantMassQuery() override { return wantMassQuery_; }
 
@@ -108,22 +95,10 @@ public:
 
     BuildResult buildDerivation(const Path & drvPath, const BasicDerivation & drv,
         BuildMode buildMode) override
-    { unsupported(); }
+    { unsupported("buildDerivation"); }
 
     void ensurePath(const Path & path) override
-    { unsupported(); }
-
-    void addTempRoot(const Path & path) override
-    { unsupported(); }
-
-    void addIndirectRoot(const Path & path) override
-    { unsupported(); }
-
-    Roots findRoots() override
-    { unsupported(); }
-
-    void collectGarbage(const GCOptions & options, GCResults & results) override
-    { unsupported(); }
+    { unsupported("ensurePath"); }
 
     ref<FSAccessor> getFSAccessor() override;
 
diff --git a/src/libstore/legacy-ssh-store.cc b/src/libstore/legacy-ssh-store.cc
index 26e1851981db..7c9bc2b68ba8 100644
--- a/src/libstore/legacy-ssh-store.cc
+++ b/src/libstore/legacy-ssh-store.cc
@@ -187,28 +187,17 @@ struct LegacySSHStore : public Store
         copyNAR(conn->from, sink);
     }
 
-    PathSet queryAllValidPaths() override { unsupported(); }
-
-    void queryReferrers(const Path & path, PathSet & referrers) override
-    { unsupported(); }
-
-    PathSet queryDerivationOutputs(const Path & path) override
-    { unsupported(); }
-
-    StringSet queryDerivationOutputNames(const Path & path) override
-    { unsupported(); }
-
     Path queryPathFromHashPart(const string & hashPart) override
-    { unsupported(); }
+    { unsupported("queryPathFromHashPart"); }
 
     Path addToStore(const string & name, const Path & srcPath,
         bool recursive, HashType hashAlgo,
         PathFilter & filter, RepairFlag repair) override
-    { unsupported(); }
+    { unsupported("addToStore"); }
 
     Path addTextToStore(const string & name, const string & s,
         const PathSet & references, RepairFlag repair) override
-    { unsupported(); }
+    { unsupported("addTextToStore"); }
 
     BuildResult buildDerivation(const Path & drvPath, const BasicDerivation & drv,
         BuildMode buildMode) override
@@ -242,25 +231,7 @@ struct LegacySSHStore : public Store
     }
 
     void ensurePath(const Path & path) override
-    { unsupported(); }
-
-    void addTempRoot(const Path & path) override
-    { unsupported(); }
-
-    void addIndirectRoot(const Path & path) override
-    { unsupported(); }
-
-    Roots findRoots() override
-    { unsupported(); }
-
-    void collectGarbage(const GCOptions & options, GCResults & results) override
-    { unsupported(); }
-
-    ref<FSAccessor> getFSAccessor() override
-    { unsupported(); }
-
-    void addSignatures(const Path & storePath, const StringSet & sigs) override
-    { unsupported(); }
+    { unsupported("ensurePath"); }
 
     void computeFSClosure(const PathSet & paths,
         PathSet & out, bool flipDirection = false,
diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index dc54c735fdb1..913a1112141e 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -562,10 +562,10 @@ void Store::buildPaths(const PathSet & paths, BuildMode buildMode)
 {
     for (auto & path : paths)
         if (isDerivation(path))
-            unsupported();
+            unsupported("buildPaths");
 
     if (queryValidPaths(paths).size() != paths.size())
-        unsupported();
+        unsupported("buildPaths");
 }
 
 
diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh
index 106b2be5e6b2..f504735e0f84 100644
--- a/src/libstore/store-api.hh
+++ b/src/libstore/store-api.hh
@@ -349,7 +349,8 @@ public:
        (i.e. you'll get /nix/store/<hash> rather than
        /nix/store/<hash>-<name>). Use queryPathInfo() to obtain the
        full store path. */
-    virtual PathSet queryAllValidPaths() = 0;
+    virtual PathSet queryAllValidPaths()
+    { unsupported("queryAllValidPaths"); }
 
     /* Query information about a valid path. It is permitted to omit
        the name part of the store path. */
@@ -368,8 +369,8 @@ public:
 
     /* Queries the set of incoming FS references for a store path.
        The result is not cleared. */
-    virtual void queryReferrers(const Path & path,
-        PathSet & referrers) = 0;
+    virtual void queryReferrers(const Path & path, PathSet & referrers)
+    { unsupported("queryReferrers"); }
 
     /* Return all currently valid derivations that have `path' as an
        output.  (Note that the result of `queryDeriver()' is the
@@ -378,10 +379,12 @@ public:
     virtual PathSet queryValidDerivers(const Path & path) { return {}; };
 
     /* Query the outputs of the derivation denoted by `path'. */
-    virtual PathSet queryDerivationOutputs(const Path & path) = 0;
+    virtual PathSet queryDerivationOutputs(const Path & path)
+    { unsupported("queryDerivationOutputs"); }
 
     /* Query the output names of the derivation denoted by `path'. */
-    virtual StringSet queryDerivationOutputNames(const Path & path) = 0;
+    virtual StringSet queryDerivationOutputNames(const Path & path)
+    { unsupported("queryDerivationOutputNames"); }
 
     /* Query the full store path given the hash part of a valid store
        path, or "" if the path doesn't exist. */
@@ -447,14 +450,16 @@ public:
 
     /* Add a store path as a temporary root of the garbage collector.
        The root disappears as soon as we exit. */
-    virtual void addTempRoot(const Path & path) = 0;
+    virtual void addTempRoot(const Path & path)
+    { unsupported("addTempRoot"); }
 
     /* Add an indirect root, which is merely a symlink to `path' from
        /nix/var/nix/gcroots/auto/<hash of `path'>.  `path' is supposed
        to be a symlink to a store path.  The garbage collector will
        automatically remove the indirect root when it finds that
        `path' has disappeared. */
-    virtual void addIndirectRoot(const Path & path) = 0;
+    virtual void addIndirectRoot(const Path & path)
+    { unsupported("addIndirectRoot"); }
 
     /* Acquire the global GC lock, then immediately release it.  This
        function must be called after registering a new permanent root,
@@ -479,10 +484,12 @@ public:
     /* Find the roots of the garbage collector.  Each root is a pair
        (link, storepath) where `link' is the path of the symlink
        outside of the Nix store that point to `storePath'.  */
-    virtual Roots findRoots() = 0;
+    virtual Roots findRoots()
+    { unsupported("findRoots"); }
 
     /* Perform a garbage collection. */
-    virtual void collectGarbage(const GCOptions & options, GCResults & results) = 0;
+    virtual void collectGarbage(const GCOptions & options, GCResults & results)
+    { unsupported("collectGarbage"); }
 
     /* Return a string representing information about the path that
        can be loaded into the database using `nix-store --load-db' or
@@ -513,11 +520,13 @@ public:
     virtual bool verifyStore(bool checkContents, RepairFlag repair = NoRepair) { return false; };
 
     /* Return an object to access files in the Nix store. */
-    virtual ref<FSAccessor> getFSAccessor() = 0;
+    virtual ref<FSAccessor> getFSAccessor()
+    { unsupported("getFSAccessor"); }
 
     /* Add signatures to the specified store path. The signatures are
        not verified. */
-    virtual void addSignatures(const Path & storePath, const StringSet & sigs) = 0;
+    virtual void addSignatures(const Path & storePath, const StringSet & sigs)
+    { unsupported("addSignatures"); }
 
     /* Utility functions. */
 
@@ -620,9 +629,9 @@ protected:
     Stats stats;
 
     /* Unsupported methods. */
-    [[noreturn]] void unsupported()
+    [[noreturn]] void unsupported(const std::string & op)
     {
-        throw Unsupported("requested operation is not supported by store '%s'", getUri());
+        throw Unsupported("operation '%s' is not supported by store '%s'", op, getUri());
     }
 
 };