From 7fcf92dfea6c5ba7cec44fbae5e41ca2f181dcd8 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Thu, 21 May 2020 11:21:03 +0200
Subject: [PATCH] re-add some fake dependencies to avoid rebuilds

---
 Cargo.lock            | 2 ++
 Cargo.toml            | 5 +++++
 cargo-miri/Cargo.toml | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index 23eafaaa6e4..182216b9ec3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -71,6 +71,7 @@ dependencies = [
  "directories 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-workspace-hack 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "vergen 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -290,6 +291,7 @@ dependencies = [
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-workspace-hack 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 6eede5ef464..375cb0aa35b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,6 +40,11 @@ rand = "0.7"
 # for more information.
 rustc-workspace-hack = "1.0.0"
 
+# Enable some feature flags that dev-dependencies need but dependencies
+# do not.  This makes `./miri install` after `./miri build` faster.
+[target."cfg(unix)".dependencies]
+libc = "0.2"
+
 [dev-dependencies]
 compiletest_rs = { version = "0.5", features = ["tmp"] }
 rustc_version = "0.2.3"
diff --git a/cargo-miri/Cargo.toml b/cargo-miri/Cargo.toml
index 86b2576273d..d6a98be2bbd 100644
--- a/cargo-miri/Cargo.toml
+++ b/cargo-miri/Cargo.toml
@@ -24,5 +24,9 @@ serde_json = "1.0.40"
 # for more information.
 rustc-workspace-hack = "1.0.0"
 
+# Enable some feature flags that dev-dependencies need but dependencies
+# do not.  This makes `./miri install` after `./miri build` faster.
+serde = { version = "*", features = ["derive"] }
+
 [build-dependencies]
 vergen = "3"