Currently, I am trying to improve std.socket(Source is here http://bitbucket.org/repeatedly/scrap/src/tip/socket.d). In this process, I get the compilation error.

test.d(5): Error: core.sys.posix.arpa.inet.INET_ADDRSTRLEN at /path/to/src/druntime/import/core/sys/posix/arpa/inet.di(45) conflicts with core.sys.posix.netinet.in_.INET_ADDRSTRLEN at /path/to/src/druntime/import/core/sys/posix/netinet/in_.di(70)

Following code is a part of std.c.osx.socket(std.c.linux.socket too).

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private import core.stdc.stdint;
public import core.sys.posix.arpa.inet;
public import core.sys.posix.netinet.tcp;
public import core.sys.posix.netinet.in_;
public import core.sys.posix.sys.select;
public import core.sys.posix.sys.socket;
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core.sys.posix.netinet.in_ already imports core.sys.posix.arpa.inet as public. I think "public import core.sys.posix.arpa.inet" should be removed.