With G-expressions you can splice in computed store values, e.g. the computed output location of a package. I recommend the paper[1] explaining why they exist

With G-expressions you can splice in computed store values, e.g. the computed output location of a package. I recommend the paper[1] explaining why they exist and what alternatives they replace. [1]: https://hal.inria.fr/hal-01580582 https://hal.inria.fr/hal-01580582