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-rwxr-xr-xaux/assert-nixfmt.sh11
1 files changed, 11 insertions, 0 deletions
diff --git a/aux/assert-nixfmt.sh b/aux/assert-nixfmt.sh
new file mode 100755
index 0000000..19bd0a2
--- /dev/null
+++ b/aux/assert-nixfmt.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+set -eux
+
+# shellcheck disable=2016
+find . -type f -name '*.nix' -print0 | xargs -0 -I{} sh -c '
+ nixfmt < "$1" | diff - "$1" || {
+ echo "The file \"$1\" is unformatted. To fix it, run:"
+ echo " nixfmt $1"
+ exit 1
+ }
+' _ {} \;