[bug#30214] [PATCH 10/10] gnu: Add mongo-tools.

[Leo Famulari]

On Mon, Jan 22, 2018 at 09:08:30PM +0000, Christopher Baines wrote:
> * gnu/packages/databases.scm (mongo-tools): New variable.

Can you add some comments explaining the following section?

> +         (replace 'build
> +           (lambda* (#:key inputs outputs #:allow-other-keys)
> +             (let ((bash (which "bash"))
> +                   (out (assoc-ref outputs "out")))
> +                (let build ((tools
> +                             '("bsondump" "mongodump" "mongoexport" 
> "mongofiles"
> +                               "mongoimport" "mongooplog" "mongorestore"
> +                               "mongostat" "mongotop")))
> +                  (if (null? tools)
> +                      #t
> +                      (if (let* ((tool (car tools))
> +                                 (command
> +                                  `("go" "install" "-v"
> +                                    "-tags=\"ssl sasl\""
> +                                    "-ldflags"

This -ldflags argument avoids the go-build-system's default ldflags,
which strip the debugging symbols. Okay if that's what you intended.

> +                                    "-extldflags=-Wl,-z,now,-z,relro"
> +                                    ,(string-append
> +                                      "src/github.com/mongodb/mongo-tools/"
> +                                      tool "/main/" tool ".go"))))
> +                            (simple-format #t "build: running ~A\n"
> +                                           (string-join command))
> +                            (zero? (apply system* command)))
> +                          (build (cdr tools))
> +                          #f)))))))))

Do you think the go-build-system should accept some sort of #:make-flags
argument to simplify this sort of thing?

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