treewide: fix redirected urls (run 3)

Related:
 - 9fc5e7e473874762fdb1b49d17dcf703d48352c3
 - 593e11fd944ce961ecf5425c3540df09e4f52265
 - 508ae42a0f64c350036d722b84c2e2905bbc5418

Since the last time I ran this script, the Repology API changed, so I had to
adapt the script used in the previous PR. The new API should be more robust, so
overall this is a positive (no more grepping the error messages for our relevant
data but just a nice json structure).

Here's the new script I used:

```sh
curl https://repology.org/api/v1/repository/nix_unstable/problems \
   | jq -r '.[] | select(.type == "homepage_permanent_https_redirect") | .data | "s@\(.url)@\(.target)@"' \
   | sort | uniq | tee script.sed
find -name '*.nix' | xargs -P4 -- sed -f script.sed -i
```

I will also add this script to `maintainers/scripts`.

1 files changed, 1 insertions, 1 deletions

diff --git a/pkgs/development/libraries/libevent/default.nix b/pkgs/development/libraries/libevent/default.nix
index 880ba746bb9..e23c7d55c5e 100644
--- a/pkgs/development/libraries/libevent/default.nix
+++ b/pkgs/development/libraries/libevent/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
       and then add or remove events dynamically without having to change
       the event loop.
     '';
-    homepage = "http://libevent.org/";
+    homepage = "https://libevent.org/";
     license = licenses.bsd3;
     platforms = platforms.all;
   };