During the last stage of the build process, makeblob.pl, under Formaline/src/utils/ is run. The build fails if /usr/bin/perl is missing or doesn’t have the necessary modules included. I got around this issue by compiling my own version of perl and replacing “#! /usr/bin/perl -w” with “#! /usr/bin/env -S perl -w”

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diff --git a/Formaline/src/util/makeblob.pl b/Formaline/src/util/makeblob.pl
index e5bcafd..bcc2084 100755
--- a/Formaline/src/util/makeblob.pl
+++ b/Formaline/src/util/makeblob.pl
@@ -1,4 +1,4 @@
-#! /usr/bin/perl -w
+#! /usr/bin/env -S  perl -w

 use diagnostics;
 use warnings;

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2811/formaline-optionally-use-non-system-perl