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diff -ru a/scripts/gcc-plugins/gen-random-seed.sh b/scripts/gcc-plugins/gen-random-seed.sh
--- a/scripts/gcc-plugins/gen-random-seed.sh 2019-01-11 11:50:29.228258920 +0100
+++ b/scripts/gcc-plugins/gen-random-seed.sh 2019-01-11 12:18:33.555902720 +0100
@@ -2,7 +2,7 @@
# SPDX-License-Identifier: GPL-2.0
if [ ! -f "$1" ]; then
- SEED=`od -A n -t x8 -N 32 /dev/urandom | tr -d ' \n'`
+ SEED="NIXOS_RANDSTRUCT_SEED"
echo "const char *randstruct_seed = \"$SEED\";" > "$1"
HASH=`echo -n "$SEED" | sha256sum | cut -d" " -f1 | tr -d ' \n'`
echo "#define RANDSTRUCT_HASHED_SEED \"$HASH\"" > "$2"
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