Replace most 'extern crate' directives with 'use'.

  - See #480.

7 files changed, 19 insertions, 19 deletions

diff --git a/ipc/build.rs b/ipc/build.rs
index 5c8a9ffb..f508b38e 100644
--- a/ipc/build.rs
+++ b/ipc/build.rs
@@ -2,7 +2,7 @@ use std::env;
 use std::fs;
 use std::io::{self, Write};
 use std::path::PathBuf;
-extern crate lalrpop;
+use lalrpop;
 
 fn main() {
     lalrpop::process_root().unwrap();
diff --git a/ipc/examples/assuan-client.rs b/ipc/examples/assuan-client.rs
index 841cc754..6d790363 100644
--- a/ipc/examples/assuan-client.rs
+++ b/ipc/examples/assuan-client.rs
@@ -1,8 +1,8 @@
-extern crate futures;
+use futures;
 use futures::future::Future;
 use futures::stream::Stream;
-extern crate clap;
-extern crate sequoia_ipc as ipc;
+use clap;
+use sequoia_ipc as ipc;
 use crate::ipc::assuan::Client;
 
 fn main() {
diff --git a/ipc/examples/gpg-agent-client.rs b/ipc/examples/gpg-agent-client.rs
index 836efbdb..61a29e84 100644
--- a/ipc/examples/gpg-agent-client.rs
+++ b/ipc/examples/gpg-agent-client.rs
@@ -1,10 +1,10 @@
 /// Connects to and sends commands to gpg-agent.
 
-extern crate futures;
+use futures;
 use futures::future::Future;
 use futures::stream::Stream;
-extern crate clap;
-extern crate sequoia_ipc as ipc;
+use clap;
+use sequoia_ipc as ipc;
 use crate::ipc::gnupg::{Context, Agent};
 
 fn main() {
diff --git a/ipc/examples/gpg-agent-decrypt.rs b/ipc/examples/gpg-agent-decrypt.rs
index 76be71db..8b5ead32 100644
--- a/ipc/examples/gpg-agent-decrypt.rs
+++ b/ipc/examples/gpg-agent-decrypt.rs
@@ -3,9 +3,9 @@
 use std::collections::HashMap;
 use std::io;
 
-extern crate clap;
-extern crate sequoia_openpgp as openpgp;
-extern crate sequoia_ipc as ipc;
+use clap;
+use sequoia_openpgp as openpgp;
+use sequoia_ipc as ipc;
 
 use crate::openpgp::cert::prelude::*;
 use crate::openpgp::crypto::SessionKey;
diff --git a/ipc/examples/gpg-agent-sign.rs b/ipc/examples/gpg-agent-sign.rs
index 2991089a..d65df8a1 100644
--- a/ipc/examples/gpg-agent-sign.rs
+++ b/ipc/examples/gpg-agent-sign.rs
@@ -2,9 +2,9 @@
 
 use std::io;
 
-extern crate clap;
-extern crate sequoia_openpgp as openpgp;
-extern crate sequoia_ipc as ipc;
+use clap;
+use sequoia_openpgp as openpgp;
+use sequoia_ipc as ipc;
 
 use crate::openpgp::armor;
 use crate::openpgp::parse::Parse;
diff --git a/ipc/src/lib.rs b/ipc/src/lib.rs
index 28b8272d..50ab9e9a 100644
--- a/ipc/src/lib.rs
+++ b/ipc/src/lib.rs
@@ -359,9 +359,9 @@ impl Server {
     ///
     /// ```compile_fail
     /// // We cannot run this because sequoia-store is not built yet.
-    /// extern crate sequoia_core;
-    /// extern crate sequoia_net;
-    /// extern crate sequoia_store;
+    /// use sequoia_core;
+    /// use sequoia_net;
+    /// use sequoia_store;
     ///
     /// use sequoia_ipc::Server;
     ///
diff --git a/ipc/tests/gpg-agent.rs b/ipc/tests/gpg-agent.rs
index c303cdd4..5d8e041b 100644
--- a/ipc/tests/gpg-agent.rs
+++ b/ipc/tests/gpg-agent.rs
@@ -2,11 +2,11 @@
 
 use std::io::{self, Write};
 
-extern crate futures;
+use futures;
 use futures::future::Future;
 use futures::stream::Stream;
 
-extern crate sequoia_openpgp as openpgp;
+use sequoia_openpgp as openpgp;
 use crate::openpgp::types::{
     HashAlgorithm,
     SymmetricAlgorithm,
@@ -17,7 +17,7 @@ use crate::openpgp::serialize::{Serialize, stream::*};
 use crate::openpgp::cert::prelude::*;
 use crate::openpgp::policy::Policy;
 
-extern crate sequoia_ipc as ipc;
+use sequoia_ipc as ipc;
 use crate::ipc::gnupg::{Context, Agent, KeyPair};
 
 macro_rules! make_context {