From f002371767df04238e3fc6dfacb6930f5529144b Mon Sep 17 00:00:00 2001 From: Christopher Baines Date: Mon, 24 Jun 2024 14:43:45 +0100 Subject: [PATCH] guix: store: Enable specifying the builtin builders. To open-connection and port->connection. This overrides the discovered builtin builders that the daemon says it provides. This is useful when you want to generate compatible derivations that can be run with a daemon that potentially doesn't support builtin builders that the daemon you're using to generate the derivations has. I'm looking at this in particular because I want to use this in the data service, since it provides substitutes for derivations, and since these can be built on other machines, it's useful to control which builtin builders they depend on. * guix/store.scm (open-connection, port->connection): Accept #:built-in-builders and use this instead of %built-in-builders. Fixes: . Change-Id: I45d58ab93b6d276d280552858fc81ebc2b58828a --- guix/store.scm | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/guix/store.scm b/guix/store.scm index 4070b686cb..cf5848e580 100644 --- a/guix/store.scm +++ b/guix/store.scm @@ -566,7 +566,7 @@ the daemon. Use 'open-connection' for that." (define* (open-connection #:optional (uri (%daemon-socket-uri)) #:key port (reserve-space? #t) cpu-affinity - non-blocking?) + non-blocking? built-in-builders) "Connect to the daemon at URI (a string), or, if PORT is not #f, use it as the I/O port over which to communicate to a build daemon. @@ -575,8 +575,10 @@ space on the file system so that the garbage collector can still operate, should the disk become full. When CPU-AFFINITY is true, it must be an integer corresponding to an OS-level CPU number to which the daemon's worker process for this connection will be pinned. If NON-BLOCKING?, use a non-blocking -socket when using the file, unix or guix URI schemes. Return a server -object." +socket when using the file, unix or guix URI schemes. If +BUILT-IN-BUILDERS is provided, it should be a list of strings +and this will be used instead of the builtin builders provided by the build +daemon. Return a server object." (define (handshake-error) (raise (condition (&store-connection-error (file (or port uri)) @@ -610,8 +612,10 @@ object." (write-int cpu-affinity port))) (when (>= (protocol-minor v) 11) (write-int (if reserve-space? 1 0) port)) - (letrec* ((built-in-builders - (delay (%built-in-builders conn))) + (letrec* ((actual-built-in-builders + (if built-in-builders + (delay built-in-builders) + (delay (%built-in-builders conn)))) (caches (make-vector (atomic-box-ref %store-connection-caches) @@ -624,15 +628,19 @@ object." (make-hash-table 100) (make-hash-table 100) caches - built-in-builders))) + actual-built-in-builders))) (let loop ((done? (process-stderr conn))) (or done? (process-stderr conn))) conn)))))) (define* (port->connection port - #:key (version %protocol-version)) + #:key (version %protocol-version) + built-in-builders) "Assimilate PORT, an input/output port, and return a connection to the -daemon, assuming the given protocol VERSION. +daemon, assuming the given protocol VERSION. If +BUILT-IN-BUILDERS is provided, it should be a list of strings +and this will be used instead of the builtin builders provided by the build +daemon. Warning: this procedure assumes that the initial handshake with the daemon has already taken place on PORT and that we're just continuing on this established @@ -649,7 +657,9 @@ connection. Use with care." (make-vector (atomic-box-ref %store-connection-caches) vlist-null) - (delay (%built-in-builders connection)))) + (if built-in-builders + (delay built-in-builders) + (delay (%built-in-builders connection))))) connection))