diff --git a/src/libfetchers/fetchers.cc b/src/libfetchers/fetchers.cc
index e3232ce1d..e69898c2b 100644
--- a/src/libfetchers/fetchers.cc
+++ b/src/libfetchers/fetchers.cc
@@ -101,11 +101,6 @@ std::optional<CanonPath> Input::isRelative() const
     return scheme->isRelative(*this);
 }
 
-bool Input::hasAllInfo() const
-{
-    return getNarHash() && scheme && scheme->hasAllInfo(*this);
-}
-
 bool Input::operator ==(const Input & other) const
 {
     return attrs == other.attrs;
@@ -170,11 +165,6 @@ void Input::checkLocks(Input & input) const
             throw Error("'revCount' attribute mismatch in input '%s', expected %d",
                 input.to_string(), *prevRevCount);
     }
-
-    // FIXME
-    #if 0
-    assert(input.hasAllInfo());
-    #endif
 }
 
 std::pair<ref<InputAccessor>, Input> Input::getAccessor(ref<Store> store) const
diff --git a/src/libfetchers/fetchers.hh b/src/libfetchers/fetchers.hh
index 85214af12..4d1e829f0 100644
--- a/src/libfetchers/fetchers.hh
+++ b/src/libfetchers/fetchers.hh
@@ -55,8 +55,6 @@ public:
        relative path, i.e. './foo'. */
     std::optional<CanonPath> isRelative() const;
 
-    bool hasAllInfo() const;
-
     bool operator ==(const Input & other) const;
 
     bool contains(const Input & other) const;
@@ -119,8 +117,6 @@ struct InputScheme
 
     virtual ParsedURL toURL(const Input & input) const;
 
-    virtual bool hasAllInfo(const Input & input) const = 0;
-
     virtual Input applyOverrides(
         const Input & input,
         std::optional<std::string> ref,
diff --git a/src/libfetchers/git.cc b/src/libfetchers/git.cc
index 697e87f28..181507b18 100644
--- a/src/libfetchers/git.cc
+++ b/src/libfetchers/git.cc
@@ -204,15 +204,6 @@ struct GitInputScheme : InputScheme
         return url;
     }
 
-    bool hasAllInfo(const Input & input) const override
-    {
-        bool maybeDirty = !input.getRef();
-        bool shallow = maybeGetBoolAttr(input.attrs, "shallow").value_or(false);
-        return
-            maybeGetIntAttr(input.attrs, "lastModified")
-            && (shallow || maybeDirty || maybeGetIntAttr(input.attrs, "revCount"));
-    }
-
     Input applyOverrides(
         const Input & input,
         std::optional<std::string> ref,
diff --git a/src/libfetchers/github.cc b/src/libfetchers/github.cc
index 9f61c0331..b00609f73 100644
--- a/src/libfetchers/github.cc
+++ b/src/libfetchers/github.cc
@@ -134,13 +134,6 @@ struct GitArchiveInputScheme : InputScheme
         };
     }
 
-    bool hasAllInfo(const Input & input) const override
-    {
-        return input.getRev() &&
-            true; // FIXME
-            //maybeGetIntAttr(input.attrs, "lastModified");
-    }
-
     Input applyOverrides(
         const Input & _input,
         std::optional<std::string> ref,
diff --git a/src/libfetchers/indirect.cc b/src/libfetchers/indirect.cc
index d0d0f4af8..3ce57fe2d 100644
--- a/src/libfetchers/indirect.cc
+++ b/src/libfetchers/indirect.cc
@@ -76,11 +76,6 @@ struct IndirectInputScheme : InputScheme
         return url;
     }
 
-    bool hasAllInfo(const Input & input) const override
-    {
-        return false;
-    }
-
     Input applyOverrides(
         const Input & _input,
         std::optional<std::string> ref,
diff --git a/src/libfetchers/mercurial.cc b/src/libfetchers/mercurial.cc
index 7139abdcb..cb7122eeb 100644
--- a/src/libfetchers/mercurial.cc
+++ b/src/libfetchers/mercurial.cc
@@ -98,13 +98,6 @@ struct MercurialInputScheme : InputScheme
         return url;
     }
 
-    bool hasAllInfo(const Input & input) const override
-    {
-        // FIXME: ugly, need to distinguish between dirty and clean
-        // default trees.
-        return input.getRef() == "default" || maybeGetIntAttr(input.attrs, "revCount");
-    }
-
     Input applyOverrides(
         const Input & input,
         std::optional<std::string> ref,
diff --git a/src/libfetchers/path.cc b/src/libfetchers/path.cc
index 831e15a77..3cb4dad02 100644
--- a/src/libfetchers/path.cc
+++ b/src/libfetchers/path.cc
@@ -84,11 +84,6 @@ struct PathInputScheme : InputScheme
         return (bool) input.getNarHash();
     }
 
-    bool hasAllInfo(const Input & input) const override
-    {
-        return true;
-    }
-
     void putFile(
         const Input & input,
         const CanonPath & path,
diff --git a/src/libfetchers/tarball.cc b/src/libfetchers/tarball.cc
index 010d71dba..a28de44c7 100644
--- a/src/libfetchers/tarball.cc
+++ b/src/libfetchers/tarball.cc
@@ -232,11 +232,6 @@ struct CurlInputScheme : InputScheme
         return url;
     }
 
-    bool hasAllInfo(const Input & input) const override
-    {
-        return true;
-    }
-
     bool isLocked(const Input & input) const override
     {
         return (bool) input.getNarHash();