Link with absolute store paths to libraries

flake.lock

@@ -2,13 +2,13 @@
   "nodes": {
     "nixpkgs": {
       "info": {
-        "lastModified": 1588878864,
-        "narHash": "sha256-0FFvF2iZosl1402T90plIYZ+QPbKUZTbuIvgWPh6l/Y="
+        "lastModified": 1589812016,
+        "narHash": "sha256-uPUZj+g50IP6+KYPPU0Bffz+yxMhy8cPP7IV0MNNrG0="
       },
       "locked": {
         "owner": "ehmry",
         "repo": "nixpkgs",
-        "rev": "93d0c88777bc229ab9628e883bd9b25baefda8eb",
+        "rev": "6c82b1adcb373f09815a70955022d272b875709c",
         "type": "github"
       },
       "original": {

overlay/libc/default.nix

@@ -1,19 +1,14 @@
 # SPDX-License-Identifier: CC0-1.0
 
-{ genodeSources, genodeBase, writeText }:
+{ genodeSources, genodeBase }:
 
 genodeSources.buildDepot {
   name = "posix";
   propagatedBuildInputs = [ genodeBase ];
   portInputs = [ genodeSources.ports.libc ];
-  preInstall =
-    # Take the libc ABI stubs rather than the actual libc.
-    # The libc needs a lot of work and we can't afford to
-    # rebuild the toolchain for every fix.
-    ''
-      find depot -name libc.abi.so -exec install -D {} "''${!outputLib}/libc.so" \;
-    '';
   postInstall = ''
+    ln -s ${genodeSources.depot "libc"}/lib/* ''${!outputLib}/lib/
+
     local headerDir="''${!outputDev}/include"
     mkdir -p "$headerDir"
     pushd ${genodeSources.ports.libc}/*