bug#70170: emacs-strait-el: build failure

[Christopher Howard]

Hello, after a recent guix pull, I am getting a failure when building 
emacs-straight-el.

```
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
In procedure stat: No such file or directory: 
"/tmp/guix-build-emacs-straight-el-0-2.039e5c9.drv-0/source/tests/mocks/.emacs.d/straight/build/straight-mock-repo/straight-mock-repo.el"
```

Here is my system information:

```
christopher@theoden 
------------------- 
OS: Guix System x86_64 
Host: OptiPlex 9020 00 
Kernel: 6.7.10-gnu 
Uptime: 8 days, 2 hours, 10 mins 
Packages: 99 (guix-system), 251 (guix-user) 
Shell: bash 5.1.16 
Resolution: 1920x1080 
DE: GNOME 
Theme: Adwaita [GTK2/3] 
Icons: Adwaita [GTK2/3] 
Terminal: shepherd 
CPU: Intel i5-4570 (4) @ 3.600GHz 
GPU: AMD ATI Radeon HD 8490 / R5 235X OEM 
GPU: Intel HD Graphics 
Memory: 4260MiB / 7863MiB 
```

```
Generation 62   Apr 02 2024 11:03:41    (current)
  guix e82dc38
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: e82dc389f58f3f2de1ba65fcd1d7584908ab5a14
```

-- 
📛 Christopher Howard
🚀 gemini://gem.librehacker.com
🌐 http://gem.librehacker.com

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