bug#47116: emacsy-minimal build failure

[Christopher Howard]

When trying to build nomad, emacsy-minimal build dies with this
failure:

starting phase `bootstrap'
patch-shebang: build-aux/git-version-gen: changing `/bin/sh' to
`/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-
5.0.16/bin/sh'
running './autogen.sh'
patch-shebang: ./autogen.sh: changing `/bin/sh' to
`/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-
5.0.16/bin/sh'
./autogen.sh: line 2: autoreconf: command not found
command "./autogen.sh" failed with status 127

I used time-machine to attempt build with recent guix commit
bd0808f13159f2cd6ceb1ba74a00e51f4e595807.

My system:

christopher@nightshade ~$ neofetch --stdout
christopher@nightshade 
---------------------- 
OS: Guix System 62942992831249d6d1c047c0a11c41d2ecccc4fc x86_64 
Host: GA-880GM-UD2H 
Kernel: 5.10.18-gnu 
Uptime: 5 days, 4 hours, 31 mins 
Packages: 105 (guix-system), 83 (guix-user) 
Shell: bash 5.0.16 
Resolution: 1920x1200 
DE: GNOME 3.34.2 
Theme: Adwaita [GTK2/3] 
Icons: Adwaita [GTK2/3] 
Terminal: .gnome-terminal 
CPU: AMD Athlon II X3 455 (3) @ 3.300GHz 
GPU: NVIDIA GeForce 8400 GS Rev. 3 
Memory: 2756MiB / 7959MiB 

-- 
Christopher Howard
phone: (907) 374-0257 (landline)
blog: https://librehacker.com
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