Backport SourcePath from the lazy-trees branch

This introduces the SourcePath type from lazy-trees as an abstraction
for accessing files from inputs that may not be materialized in the
real filesystem (e.g. Git repositories). Currently, however, it's just
a wrapper around CanonPath, so it shouldn't change any behaviour. (On
lazy-trees, SourcePath is a <InputAccessor, CanonPath> tuple.)

1 files changed, 3 insertions, 3 deletions

diff --git a/src/nix/main.cc b/src/nix/main.cc
index 54c920b4e..df0a25214 100644
--- a/src/nix/main.cc
+++ b/src/nix/main.cc
@@ -197,14 +197,14 @@ static void showHelp(std::vector<std::string> subcommand, NixArgs & toplevel)
     auto vGenerateManpage = state.allocValue();
     state.eval(state.parseExprFromString(
         #include "generate-manpage.nix.gen.hh"
-        , "/"), *vGenerateManpage);
+        , CanonPath::root), *vGenerateManpage);
 
     auto vUtils = state.allocValue();
     state.cacheFile(
-        "/utils.nix", "/utils.nix",
+        CanonPath("/utils.nix"), CanonPath("/utils.nix"),
         state.parseExprFromString(
             #include "utils.nix.gen.hh"
-            , "/"),
+            , CanonPath::root),
         *vUtils);
 
     auto vDump = state.allocValue();