From 2a040aa646ca34b0080bd47bf6a832c15b19c38a Mon Sep 17 00:00:00 2001
From: Andrew Chin <achin@eminence32.net>
Date: Thu, 26 Aug 2021 00:53:05 -0400
Subject: [PATCH] Unpin hex and bitflags

Pinning these versions caused problems when using procfs with other
crates that had conflicting requirements.  Unpin these versions and
update the README with instructions on how downstream users can manually
select what version of hex and bitflags to use

Closes #144
---
 .github/workflows/rust.yml | 16 ++++++++++++++++
 Cargo.toml                 |  4 ++--
 README.md                  |  6 +++++-
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 318701d6..eeaf4937 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -18,6 +18,15 @@ jobs:
       uses: actions-rs/toolchain@v1
       with:
         toolchain: ${{ matrix.toolchain }}
+    
+    - name: Pin hex and bitflags
+      if: matrix.toolchain == '1.34.0' || matrix.toolchain == '1.42.0'
+      run: |
+        cargo +${{ matrix.toolchain }} update
+        cargo +${{ matrix.toolchain }} update --manifest-path procfs-tests/Cargo.toml
+        cargo +${{ matrix.toolchain }} update -p hex --precise 0.4.2
+        cargo +${{ matrix.toolchain }} update -p bitflags --precise 1.2.1
+        cargo +${{ matrix.toolchain }} update --manifest-path procfs-tests/Cargo.toml -p bitflags --precise 1.2.1
 
     - name: Build
       run: cargo +${{ matrix.toolchain }} build --verbose
@@ -51,6 +60,13 @@ jobs:
           toolchain: ${{ matrix.toolchain }}
           target: aarch64-linux-android
 
+      - name: Pin hex and bitflags
+        if:  matrix.toolchain == '1.42.0'
+        run: |
+          cargo +${{ matrix.toolchain }} update
+          cargo +${{ matrix.toolchain }} update -p hex --precise 0.4.2
+          cargo +${{ matrix.toolchain }} update -p bitflags --precise 1.2.1
+
       - name: cargo check
         run: cargo +${{ matrix.toolchain }} check --target aarch64-linux-android
 
diff --git a/Cargo.toml b/Cargo.toml
index 74ae5d24..ac449a1f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,11 +16,11 @@ default = ["chrono"]
 
 [dependencies]
 libc = "0.2"
-bitflags = "~1.2"
+bitflags = "1.2"
 lazy_static = "1"
 chrono = {version = "0.4", optional = true }
 byteorder = {version="1", features=["i128"]}
-hex = "=0.4.2"
+hex = "0.4"
 flate2 = "1"
 backtrace = { version = "0.3", optional = true }
 
diff --git a/README.md b/README.md
index d1f18960..9ee8e6c1 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,11 @@ The following cargo features are available:
 ## Minimum Rust Version
 
 This crate requires a minimum rust version of 1.34.0 (2019-04-11), though if you use the optional `backtrace` feature,
-rust 1.42.0 is required (2020-03-12).
+rust 1.42.0 is required (2020-03-12).  However, two dependencies of this crate (`hex` and `bitflags`) require a newer
+version of rust, and must be manually pinned to an older version in order to use rust 1.34.  You can do this by running:
+
+    cargo update -p hex --precise 0.4.2
+    cargo update -p bitflags --precise 1.2.1
 
 ## License