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authorMaximilian Bosch <maximilian@mbosch.me>2019-05-06 16:42:34 +0200
committerMaximilian Bosch <maximilian@mbosch.me>2019-05-07 22:08:04 +0200
commit0f9653f7ed83494630f8a024a4ca219ed882ec7f (patch)
tree7a62309a23d4fede356cb2c46244f769d7856ed6 /doc/stdenv.xml
parent0d00b0b646b7a3c909631354adc16ae07be44bc8 (diff)
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doc/stdenv: put note about remote builds with breakpointHook into a <note>
With remote builds, the sandbox can't be accessed by `cntr` as it is on
a different machine. I decided to put this into an extra `note` block as it took
me admittedly too much time to figure this out.
Diffstat (limited to 'doc/stdenv.xml')
-rw-r--r--doc/stdenv.xml14
1 files changed, 11 insertions, 3 deletions
diff --git a/doc/stdenv.xml b/doc/stdenv.xml
index 0435362306ba..63e6450860ac 100644
--- a/doc/stdenv.xml
+++ b/doc/stdenv.xml
@@ -2643,9 +2643,7 @@ addEnvHooks "$hostOffset" myBashFunction
        At <filename>/var/lib/cntr</filename> the sandboxed filesystem is
        mounted. All commands and files of the system are still accessible
        within the shell. To execute commands from the sandbox use the cntr exec
-       subcommand. Note that <command>cntr</command> also needs to be executed
-       on the machine that is doing the build, which might not be the case when
-       remote builders are enabled. <command>cntr</command> is only supported
+       subcommand. <command>cntr</command> is only supported
        on Linux-based platforms. To use it first add <literal>cntr</literal> to
        your <literal>environment.systemPackages</literal> on NixOS or
        alternatively to the root user on non-NixOS systems. Then in the package
@@ -2657,6 +2655,16 @@ addEnvHooks "$hostOffset" myBashFunction
        When a build failure happens there will be an instruction printed that
        shows how to attach with <literal>cntr</literal> to the build sandbox.
       </para>
+      <note>
+       <title>Caution with remote builds</title>
+       <para>
+        This won't work with remote builds as the build environment is on
+        a different machine and can't be accessed by <command>cntr</command>.
+        Remote builds can be turned off by setting <literal>--option builders ''</literal>
+        for <command>nix-build</command> or <literal>--builders ''</literal> for
+        <command>nix build</command>.
+       </para>
+      </note>
      </listitem>
     </varlistentry>
     <varlistentry>