diff --git a/source/eventcore/drivers/posix/dns.d b/source/eventcore/drivers/posix/dns.d
index d441705..f2d147e 100644
--- a/source/eventcore/drivers/posix/dns.d
+++ b/source/eventcore/drivers/posix/dns.d
@@ -3,6 +3,7 @@ module eventcore.drivers.posix.dns;
 
 import eventcore.driver;
 import eventcore.drivers.posix.driver;
+import eventcore.internal.utils : ChoppedVector;
 
 import std.socket : Address, AddressFamily, InternetAddress, Internet6Address, UnknownAddress;
 version (Posix) {
diff --git a/source/eventcore/drivers/posix/events.d b/source/eventcore/drivers/posix/events.d
index 643c07f..2c703b6 100644
--- a/source/eventcore/drivers/posix/events.d
+++ b/source/eventcore/drivers/posix/events.d
@@ -8,7 +8,8 @@ import eventcore.internal.consumablequeue : ConsumableQueue;
 import std.socket : InternetAddress;
 
 version (linux) {
-	extern (C) int eventfd(uint initval, int flags);
+	nothrow @nogc extern (C) int eventfd(uint initval, int flags);
+	import core.sys.posix.unistd : close, read, write;
 	enum EFD_NONBLOCK = 0x800;
 }
 
diff --git a/source/eventcore/drivers/posix/signals.d b/source/eventcore/drivers/posix/signals.d
index 9523890..f0464b9 100644
--- a/source/eventcore/drivers/posix/signals.d
+++ b/source/eventcore/drivers/posix/signals.d
@@ -4,10 +4,14 @@ module eventcore.drivers.posix.signals;
 import eventcore.driver;
 import eventcore.drivers.posix.driver;
 
+import std.algorithm.comparison : among;
+
 
 final class SignalFDEventDriverSignals(Loop : PosixEventLoop) : EventDriverSignals {
 @safe: /*@nogc:*/ nothrow:
+	import core.stdc.errno : errno, EAGAIN, EINPROGRESS;
 	import core.sys.posix.signal;
+	import core.sys.posix.unistd : close, read, write;
 	import core.sys.linux.sys.signalfd;
 
 	private Loop m_loop;
diff --git a/source/eventcore/drivers/posix/watchers.d b/source/eventcore/drivers/posix/watchers.d
index b0b59c6..fea70a4 100644
--- a/source/eventcore/drivers/posix/watchers.d
+++ b/source/eventcore/drivers/posix/watchers.d
@@ -7,7 +7,9 @@ import eventcore.drivers.posix.driver;
 
 final class InotifyEventDriverWatchers(Loop : PosixEventLoop) : EventDriverWatchers
 {
+	import core.stdc.errno : errno, EAGAIN, EINPROGRESS;
 	import core.sys.posix.fcntl, core.sys.posix.unistd, core.sys.linux.sys.inotify;
+	import std.algorithm.comparison : among;
 	import std.file;
 
 	private {