lix-doc: move under src/

This is required to make more meson stuff easier/possible, and honestly
it *is* now Lix sources anyhow.

Change-Id: Ia6c38fabce9aa5c53768745ee38c5cf344f5c226

meson.build

@@ -554,7 +554,6 @@ if is_darwin
   )
 endif
 
-subdir('lix-doc')
 subdir('src')
 subdir('scripts')
 subdir('misc')

package.nix

@@ -135,7 +135,6 @@ let
     ./meson.build
     ./meson.options
     ./meson
-    ./lix-doc
     ./scripts/meson.build
     ./subprojects
   ]);
@@ -289,7 +288,7 @@ stdenv.mkDerivation (finalAttrs: {
     BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
   };
 
-  cargoDeps = rustPlatform.importCargoLock { lockFile = ./lix-doc/Cargo.lock; };
+  cargoDeps = rustPlatform.importCargoLock { lockFile = ./src/lix-doc/Cargo.lock; };
 
   preConfigure =
     lib.optionalString (!finalAttrs.dontBuild && !hostPlatform.isStatic) ''

src/lix-doc/package.nix

@@ -0,0 +1,8 @@
+{ rustPlatform, lib }:
+
+rustPlatform.buildRustPackage {
+  name = "lix-doc";
+
+  cargoLock.lockFile = ./Cargo.lock;
+  src = lib.cleanSource ./.;
+}

src/meson.build

@@ -1,4 +1,5 @@
 # Subcomponents: these link into artifacts themselves, and have interdependencies.
+subdir('lix-doc')
 
 subdir('libutil')
 # Load-bearing order. libstore depends on libutil.