This built on aarch64 on core-updates in about 12.5 hours. I did need to
add the following substitution* to the package definition.

diff --git a/gnu/packages/chromium.scm b/gnu/packages/chromium.scm
index 81bcb8f05..855779a11 100644
--- a/gnu/packages/chromium.scm
+++ b/gnu/packages/chromium.scm
@@ -346,6 +346,13 @@
                (("include \"third_party/curl") "include \"curl"))
              (substitute* "media/base/decode_capabilities.cc"
                (("third_party/libvpx/source/libvpx/") ""))
+
+             ;; We don't cross compile most packages, so get rid of the
+             ;; unnecessary ARCH-linux-gnu* prefix.
+             (substitute* "build/toolchain/linux/BUILD.gn"
+               (("aarch64-linux-gnu-") "")
+               (("arm-linux-gnueabihf-") ""))
+
              #t))
          (replace 'configure
            (lambda* (#:key inputs outputs #:allow-other-keys)

With this addition it builds for me.


-- 
Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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