Attempt to 'get-bytevector-n!' from directory in union.scm?

[Mark H Weaver]

Any idea what happened here?

      Mark

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mhw:~/guix$ guix package -u readline
The following package will be installed:
   readline-6.2 out     /nix/store/xgi8n7x2m1ngg0d9p9ig6gscvzpdzkwh-readline-6.2

The following derivation will be built:
   /nix/store/2pkmji49pv87rk04zzv3nxjl3d57rph0-profile.drv

[... lots of other collision warnings ...]

Backtrace:
In unknown file:
   ?: 19 [apply-smob/1 #<catch-closure 101d1db0>]
In ice-9/boot-9.scm:
  63: 18 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
 432: 17 [eval # #]
In ice-9/boot-9.scm:
2320: 16 [save-module-excursion #<procedure 1018bd40 at ice-9/boot-9.scm:3961:3 
()>]
3966: 15 [#<procedure 1018bd40 at ice-9/boot-9.scm:3961:3 ()>]
1645: 14 [%start-stack load-stack ...]
1650: 13 [#<procedure 101dd2b8 ()>]
In unknown file:
   ?: 12 [primitive-load 
"/nix/store/y8v59kg2jdnbalxi1djz9bsdhk88l3r6-profile-guile-builder"]
In ice-9/eval.scm:
 387: 11 [eval # ()]
 432: 10 [eval # #]
In 
/nix/store/n670kdk9ysi9jlq3f6ki4glc34p35dc1-module-import/guix/build/union.scm:
 202: 9 [union-build "/nix/store/dn29z8fpkh33sxgwwbxg0cn7ih523v65-profile" # # 
...]
 102: 8 [loop #]
In srfi/srfi-1.scm:
 578: 7 [map #<procedure loop (tree)> (# # # # ...)]
In 
/nix/store/n670kdk9ysi9jlq3f6ki4glc34p35dc1-module-import/guix/build/union.scm:
 101: 6 [loop #]
In srfi/srfi-1.scm:
 578: 5 [map #<procedure resolve-collision (leaves)> (# # # # ...)]
In 
/nix/store/n670kdk9ysi9jlq3f6ki4glc34p35dc1-module-import/guix/build/union.scm:
 187: 4 [resolve-collision #]
In ice-9/boot-9.scm:
 793: 3 [call-with-input-file 
"/nix/store/25mp69n6i16b308sbyh42ic3qzld46li-ncurses-5.9/lib/terminfo" ...]
 793: 2 [call-with-input-file 
"/nix/store/y9q8dwgs8lxww2khkk1hfji1jihkfcz3-ncurses-5.9/lib/terminfo" ...]
In 
/nix/store/n670kdk9ysi9jlq3f6ki4glc34p35dc1-module-import/guix/build/union.scm:
 116: 1 [#<procedure 10469fb0 at 
/nix/store/n670kdk9ysi9jlq3f6ki4glc34p35dc1-module-import/guix/build/union.scm:111:13
 (port2)> #<input: 
/nix/store/y9q8dwgs8lxww2khkk1hfji1jihkfcz3-ncurses-5.9/lib/terminfo 7>]
In unknown file:
   ?: 0 [get-bytevector-n! #<input: 
/nix/store/25mp69n6i16b308sbyh42ic3qzld46li-ncurses-5.9/lib/terminfo 6> ...]

ERROR: In procedure get-bytevector-n!:
ERROR: In procedure fport_fill_input: Is a directory
builder for `/nix/store/2pkmji49pv87rk04zzv3nxjl3d57rph0-profile.drv' failed 
with exit code 1
killing process 18700
guix package: error: build failed: build of 
`/nix/store/2pkmji49pv87rk04zzv3nxjl3d57rph0-profile.drv' failed
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