This patch fixes a failing unit test by feeding buildNormalizedPath to the
tzdata properly. Three other tests are disables, one assumes /root and the
two others use networking.

by Pjotr Prins <pjotr.guix@thebird.nl>

diff --git a/std/datetime.d b/std/datetime.d
index 8e4ed3b..6c15bc5 100644
--- a/std/datetime.d
+++ b/std/datetime.d
@@ -28018,6 +28018,7 @@ public:
             The default directory where the TZ Database files are. It's empty
             for Windows, since Windows doesn't have them.
           +/
+          
         enum defaultTZDatabaseDir = "/usr/share/zoneinfo/";
     }
     else version(Windows)
@@ -28069,14 +28070,13 @@ assert(tz.dstName == "PDT");
         import std.range : retro;
         import std.format : format;
 
-        name = strip(name);
-
         enforce(tzDatabaseDir.exists(), new DateTimeException(format("Directory %s does not exist.", tzDatabaseDir)));
         enforce(tzDatabaseDir.isDir, new DateTimeException(format("%s is not a directory.", tzDatabaseDir)));
 
-        immutable file = buildNormalizedPath(tzDatabaseDir, name);
+        auto filename = "./" ~ strip(name); // make sure the prefix is not stripped
+        immutable file = buildNormalizedPath(tzDatabaseDir, filename);
 
-        enforce(file.exists(), new DateTimeException(format("File %s does not exist.", file)));
+        enforce(file.exists(), new DateTimeException(format("File %s does not exist in %s.", file, tzDatabaseDir)));
         enforce(file.isFile, new DateTimeException(format("%s is not a file.", file)));
 
         auto tzFile = File(file);
diff --git a/std/path.d b/std/path.d
index 254d8f0..b0fc04d 100644
--- a/std/path.d
+++ b/std/path.d
@@ -3080,8 +3080,11 @@ unittest
         }
         else
         {
+            pragma(msg, "test disabled on GNU Guix");
+/*
             assert(expandTilde("~root") == "/root", expandTilde("~root"));
             assert(expandTilde("~root/") == "/root/", expandTilde("~root/"));
+*/
         }
         assert(expandTilde("~Idontexist/hey") == "~Idontexist/hey");
     }
diff --git a/std/socket.d b/std/socket.d
index b85d1c9..7fbf346 100644
--- a/std/socket.d
+++ b/std/socket.d
@@ -517,6 +517,8 @@ class Protocol
 
 unittest
 {
+    pragma(msg, "test disabled on GNU Guix");
+/*
     // getprotobyname,number are unimplemented on Android
     softUnittest({
         Protocol proto = new Protocol;
@@ -530,6 +532,7 @@ unittest
         assert(proto.name == "tcp");
         assert(proto.aliases.length == 1 && proto.aliases[0] == "TCP");
     });
+*/
 }
 
 
@@ -859,6 +862,8 @@ class InternetHost
 
 unittest
 {
+    pragma(msg, "test disabled on GNU Guix");
+    /*
     InternetHost ih = new InternetHost;
 
     ih.getHostByAddr(0x7F_00_00_01);
@@ -889,6 +894,7 @@ unittest
         //      writefln("aliases[%d] = %s", i, s);
         // }
     });
+    */
 }