GNU bug report logs - #52338
Crawler bots are downloading substitutes

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From: Leo Famulari <leo <at> famulari.name>
To: 52338 <at> debbugs.gnu.org
Subject: bug#52338: [maintenance] hydra: berlin: Create robots.txt.
Date: Mon,  6 Dec 2021 17:18:10 -0500

I tested that `guix system build` does succeed with this change, but I
would like a review on whether the resulting Nginx configuration is
correct, and if this is the correct path to disallow. It generates an
Nginx location block like this:

------
      location /robots.txt {
        add_header  Content-Type  text/plain;
        return 200 "User-agent: *
Disallow: /nar
";
      }
------

* hydra/nginx/berlin.scm (berlin-locations): Add a robots.txt Nginx location.
---
 hydra/nginx/berlin.scm | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/hydra/nginx/berlin.scm b/hydra/nginx/berlin.scm
index 1f4b0be..3bb2129 100644
--- a/hydra/nginx/berlin.scm
+++ b/hydra/nginx/berlin.scm
@@ -174,7 +174,14 @@ PUBLISH-URL."
            (nginx-location-configuration
             (uri "/berlin.guixsd.org-export.pub")
             (body
-             (list "root /var/www/guix;"))))))
+             (list "root /var/www/guix;")))
+
+           (nginx-location-configuration
+             (uri "/robots.txt")
+             (body
+               (list
+                 "add_header  Content-Type  text/plain;"
+                 "return 200 \"User-agent: *\nDisallow: /nar/\n\";"))))))
 
 (define guix.gnu.org-redirect-locations
   (list
-- 
2.34.0

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