diff options
| -rw-r--r-- | guix/derivations.scm | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/guix/derivations.scm b/guix/derivations.scm index 480a65c78b..0ee325d489 100644 --- a/guix/derivations.scm +++ b/guix/derivations.scm @@ -305,10 +305,13 @@ result is the set of prerequisites of DRV not already in valid." sub-drvs)))) (define* (derivation-input-fold proc seed inputs - #:key (cut? (const #f))) + #:key + (cut? (const #f)) + (skip-dependencies? (const #f))) "Perform a breadth-first traversal of INPUTS, calling PROC on each input -with the current result, starting from SEED. Skip recursion on inputs that -match CUT?." +with the current result, starting from SEED. Skip inputs that match CUT? as +well as all their dependencies; skip the dependencies of inputs that match +SKIP-DEPENDENCIES?, but not the input itself." (let loop ((inputs inputs) (result seed) (visited (set))) @@ -323,7 +326,9 @@ match CUT?." (loop rest result (set-insert key visited))) (else (let ((drv (derivation-input-derivation input))) - (loop (append (derivation-inputs drv) rest) + (loop (if (skip-dependencies? input) + rest + (append (derivation-inputs drv) rest)) (proc input result) (set-insert key visited)))))))))) |