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bug#35874: “guix pull” fails on setlocale

From: Ludovic Courtès
Subject: bug#35874: “guix pull” fails on setlocale
Date: Sat, 25 May 2019 19:17:55 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux)


Ricardo Wurmus <address@hidden> skribis:

> Ludovic Courtès <address@hidden> writes:


>> When you do ‘guix pull’, the resulting (guix config) is supposed to
>> honor the settings of the calling ‘guix’: %localstatedir, etc.
>> It seems that it wasn’t the case here?  Could you try again running
>> ‘guix pull’ from a ‘guix’ command that has non-default settings and
>> check the resulting (guix config) module?
> Is (guix config) enough?  What about the daemon?  I’ve had no problem
> with “guix” itself when used with a daemon taken from the git checkout.

Oooh, good point, the ‘guix-daemon’ package uses a fixed localstatedir.

I believe the patch below solves the problem.  WDYT?

> Yes, I was able to identify the corrupt store items and copy the
> corresponding items from a separate machine.  I was lucky that it
> aborted early when trying to delete items, so it seems that it didn’t
> get to do all that much damage.


> (Curiously, I wasn’t able to run “guix gc --verify=repair,contents”
> because Guix claims I don’t have sufficient privileges to repair the
> store — I’m running this as root, but who knows how NFS complicates
> things…)

It’s supposed to work if you’re root, and the privilege claim checks
just that (see nix-daemon.cc):

--8<---------------cut here---------------start------------->8---
        if (remoteAddr.ss_family == AF_UNIX) {
            trusted = clientUid == 0;

    case wopVerifyStore: {
        bool checkContents = readInt(from) != 0;
        bool repair = readInt(from) != 0;
        if (repair && !trusted)
            throw Error("you are not privileged to repair paths");
        bool errors = store->verifyStore(checkContents, repair);
        writeInt(errors, to);
--8<---------------cut here---------------end--------------->8---


diff --git a/guix/self.scm b/guix/self.scm
index 6d7569ec19..8cc82de64c 100644
--- a/guix/self.scm
+++ b/guix/self.scm
@@ -603,7 +603,21 @@ Info manual."
   (define (wrap daemon)
     (program-file "guix-daemon"
+                      ;; Refer to the right 'guix' command for 'guix
+                      ;; substitute' & co.
                       (setenv "GUIX" #$command)
+                      ;; Honor the user's settings rather than those hardcoded
+                      ;; in the 'guix-daemon' package.
+                      (unless (getenv "GUIX_STATE_DIRECTORY")
+                        (setenv "GUIX_STATE_DIRECTORY"
+                                #$(string-append %localstatedir "/guix")))
+                      (unless (getenv "GUIX_CONFIGURATION_DIRECTORY")
+                        (setenv "GUIX_CONFIGURATION_DIRECTORY"
+                                #$(string-append %sysconfdir "/guix")))
+                      (unless (getenv "NIX_STORE_DIR")
+                        (setenv "NIX_STORE_DIR" %storedir))
                       (apply execl #$(file-append daemon "/bin/guix-daemon")
                              "guix-daemon" (cdr (command-line))))))

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