meson fails for some locales

.SRCINFO

@@ -1,5 +1,5 @@
 # Generated by mksrcinfo v8
-# Thu Oct 12 10:13:51 UTC 2017
+# Tue Oct 17 13:59:08 UTC 2017
 pkgbase = astroid-git
 	pkgdesc = a graphical threads-with-tags style, lightweight and fast, email client for notmuch, inspired by sup and others
 	pkgver = v0.10.2.r0.gaa8789f

PKGBUILD

@@ -28,7 +28,7 @@ md5sums=('SKIP')
 
 build() {
   cd "$srcdir/astroid"
-  meson build --prefix=/usr --buildtype release
+  LC_ALL=C meson build --prefix=/usr --buildtype release
   cd build
   ninja
 }