Hi all,

I'm using the following incantation:

guix build
--with-source=foobar@9.5.0=/opt/thirdparty/foobar/foobar950_beta/linux64
<--with-source=gurobipy@9.5.0=/opt/thirdparty/gurobi/gurobi950_beta/linux64>
foobar


However the package build is failing with:

(copy-file "lib/libfoobar.so.9.0.1" "/gnu/store/gkawzac…")

In procedure copy-file: No such file or directory


That is the new version number 9.5.0 is not written to every place when
transforming the original package (version 9.0.1).  I think only the
package-version is updated, but the other package components are not then
regenerated, meaning that if they use the package-version as an input we
get a disjoint package.

In the example above I use version like so:






*(add-after 'install 'install-foobar-library
      (lambda* (#:key outputs #:allow-other-keys)
              (let* ((dir (string-append (assoc-ref outputs "out")

"/lib/python3.8/site-packages/foobar/"))
                                             (lib-to-install (string-append
"libfoobar.so." ,version))*

But ",version" is not updated, nor is it updated if I change this to call
(package-version foobar).


If I drop into Guile I can see this a bit more clearly by writing a
manifest - the code below gives exactly the same error however when the
package-version is displayed it correctly responds with 9.5.0.

Not sure if this should be considered a bug, or if there is a lazy way of
evaluating version so avoid the problem - I think it's unexpected from a
practicioners point of view as packages end up inconsistent.

I presume I can manually replace the arguments section of the package in
the manifest to workaround this - is there a standard way of doing this?

Any ideas or clarifications welcome!

Cheers,
Phil.
















*(use-modules (guix transformations)             (guix packages))(define
transform  ;; The package transformation procedure.
(options->transformation   '((with-source .
"gurobipy@9.5.0=/opt/thirdparty/foobar/foobar950_beta/linux64"))))(define
my-package (transform (specification->package "foobar")))(display
(package-version my-package)) ;; this will display version
9.5.0(newline)(packages->manifest (list my-package)) ;; building this will
fail because copy-file still looks for 9.0.1*