> Then I’m pretty clueless here.  /nix/store/*-glibc-2.13.drv is
> definitely the result of “nix-instantiate -A glibc /path/to/nixpkgs”.
> It should be valid here.

I haven't found a workaround.  But I decided to try again in a new
chroot.  Now 'make' fails with an error.

# ./bootstrap
# ./configure
# make

Backtrace:
In system/base/compile.scm:
 177: 19 [lp (#<procedure compile-tree-il (x e opts)>) (define-module # # ...) ...]
In ice-9/boot-9.scm:
2131: 18 [save-module-excursion #<procedure 103cb480 at language/scheme/compile-tree-il.scm:29:3 ()>]
In language/scheme/compile-tree-il.scm:
  31: 17 [#<procedure 103cb480 at language/scheme/compile-tree-il.scm:29:3 ()>]
In ice-9/psyntax.scm:
1091: 16 [expand-top-sequence ((define-module # # # ...)) () ((top)) ...]
 976: 15 [scan ((define-module (distro packages base) #:use-module ...)) () ...]
 270: 14 [scan ((#(syntax-object let # ...) (#) (# #) ...)) () ...]
In ice-9/eval.scm:
 400: 13 [eval # ()]
In ice-9/boot-9.scm:
2681: 12 [define-module* (distro packages base) #:filename ...]
2656: 11 [resolve-imports ((#) (#) (#) (#) ...)]
2594: 10 [resolve-interface (distro packages bootstrap) #:select ...]
2519: 9 [#<procedure 1017ea70 at ice-9/boot-9.scm:2507:4 (name #:optional autoload version #:key ensure)> # ...]
2786: 8 [try-module-autoload (distro packages bootstrap) #f]
2131: 7 [save-module-excursion #<procedure 106c3e40 at ice-9/boot-9.scm:2787:17 ()>]
2797: 6 [#<procedure 106c3e40 at ice-9/boot-9.scm:2787:17 ()>]
In unknown file:
   ?: 5 [primitive-load-path "distro/packages/bootstrap" #f]
In ice-9/eval.scm:
 442: 4 [eval # ()]
In guix/utils.scm:
 171: 3 [nixpkgs-derivation "guile" "mips64el-linux"]
In ice-9/popen.scm:
  52: 2 [open-pipe* "r" "/usr/local/bin/nix-instantiate" ...]
In unknown file:
   ?: 1 [open-process "r" "/usr/local/bin/nix-instantiate" ...]
In ice-9/boot-9.scm:
 106: 0 [#<procedure 102b68e0 at ice-9/boot-9.scm:97:6 (thrown-k . args)> wrong-type-arg ...]

ice-9/boot-9.scm:106:20: In procedure #<procedure 102b68e0 at ice-9/boot-9.scm:97:6 (thrown-k . args)>:
ice-9/boot-9.scm:106:20: Wrong type (expecting string): #f
make[2]: *** [distro/packages/base.go] Error 1
make[2]: Leaving directory `/home/guix-savannah'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/guix-savannah'
make: *** [all] Error 2

Here is a more descriptive error message:

scheme@(guile-user)> ,use (distro packages base)

[...]

While executing meta-command:
ERROR: Unbound variable: %bootstrap-guile

More tests:

scheme@(guile-user)> ,use (distro packages bootstrap)
While executing meta-command:
ERROR: Wrong type (expecting string): #f

This error won't appear if I run ',use' again:

scheme@(guile-user)> ,use (distro packages bootstrap)
scheme@(guile-user)>

But I'll get the 'Unbound variable' error anyway:

scheme@(guile-user)> %bootstrap-guile
;;; <unknown-location>: warning: possibly unbound variable `%bootstrap-guile'
ERROR: In procedure #<procedure 10505270 ()>:
ERROR: In procedure module-lookup: Unbound variable: %bootstrap-guile

Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
scheme@(guile-user) [1]> 

By the way, here is a definition of '%bootstrap-guile':

(define %bootstrap-guile
  (nixpkgs-derivation "guile" "mips64el-linux"))

I also tried to call the above procedure from the REPL, but it didn't
work out:

scheme@(guile-user)> ,use (guix utils)
scheme@(guile-user)> (nixpkgs-derivation "guile" "mips64el-linux")
ERROR: In procedure open-process:
ERROR: Wrong type (expecting string): #f

Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
scheme@(guile-user) [1]> 
scheme@(guile-user)> (nixpkgs-derivation "hello" "mips64el-linux")
ERROR: In procedure open-process:
ERROR: Wrong type (expecting string): #f

Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
scheme@(guile-user) [1]> 
scheme@(guile-user)> (nixpkgs-derivation "hello")
ERROR: In procedure open-process:
ERROR: Wrong type (expecting string): #f

Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
scheme@(guile-user) [1]> 

It's possible that I've forgotten to install something.  I ran
'nix-env -i guile' to check that Nix-related things work fine, but I
interrupted the process when it decided to fetch the Linux kernel from
<kernel.org>.

(Actually, it's a bit disappointing because I thought that
'export HYDRA_DISALLOW_UNFREE=1' can handle this.  But it's a different
issue.)

So, do you have any ideas?

Nikita