1 files changed, 39 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/compilers/rust/print-hashes.sh b/nixpkgs/pkgs/development/compilers/rust/print-hashes.sh
new file mode 100755
index 000000000000..1d46fe376d4b
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/rust/print-hashes.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# All rust-related downloads can be found at
+# https://static.rust-lang.org/dist/index.html.  To find the date on
+# which a particular thing was last updated, look for the *-date.txt
+# file, e.g.
+# https://static.rust-lang.org/dist/channel-rust-beta-date.txt
+
+PLATFORMS=(
+  i686-unknown-linux-gnu
+  x86_64-unknown-linux-gnu
+  arm-unknown-linux-gnueabihf
+  armv7-unknown-linux-gnueabihf
+  aarch64-unknown-linux-gnu
+  i686-apple-darwin
+  x86_64-apple-darwin
+)
+BASEURL=https://static.rust-lang.org/dist
+VERSION=${1:-}
+DATE=${2:-}
+
+if [[ -z $VERSION ]]
+then
+    echo "No version supplied"
+    exit -1
+fi
+
+if [[ -n $DATE ]]
+then
+    BASEURL=$BASEURL/$DATE
+fi
+
+for PLATFORM in "${PLATFORMS[@]}"
+do
+    URL="$BASEURL/rust-$VERSION-$PLATFORM.tar.gz.sha256"
+    SHA256=$(curl -sSfL $URL | cut -d ' ' -f 1)
+    echo "$PLATFORM = \"$SHA256\";"
+done