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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=KltHxCV0; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -3.02 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=KltHxCV0; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 0EE5928DD8 X-Spam-Score: -3.02 X-Migadu-Scanner: scn0.migadu.com X-TUID: k/XrEvDymEev Hi, pronaip@riseup.net skribis: > This should be a good enough reproducer: > > ``` > (home-environment > (packages > (map specification->package+output > (list "glib:bin" > ...))) > ...) > ``` =E2=80=98specification->package+output=E2=80=99 returns two values: --8<---------------cut here---------------start------------->8--- scheme@(guile-user)> (specification->package+output "glib:bin") $38 =3D # $39 =3D "bin" --8<---------------cut here---------------end--------------->8--- However, =E2=80=98map=E2=80=99 expects its first argument to return one val= ue and thus discards additional values: --8<---------------cut here---------------start------------->8--- scheme@(guile-user)> (map specification->package+output '("glib:bin")) $40 =3D (#) --8<---------------cut here---------------end--------------->8--- Instead, you have to write =E2=80=98specifications->packages=E2=80=99: --8<---------------cut here---------------start------------->8--- scheme@(guile-user)> (specifications->packages '("glib:bin" "inkscape")) $42 =3D ((# "bi= n") (# "= out")) --8<---------------cut here---------------end--------------->8--- That=E2=80=99s what =E2=80=98guix home import=E2=80=99 does now, but I noti= ced it=E2=80=99s not documented so I=E2=80=99ll add it to the manual. Thanks, Ludo=E2=80=99.