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-rw-r--r--gnu/packages/patches/racket-store-checksum-override.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/gnu/packages/patches/racket-store-checksum-override.patch b/gnu/packages/patches/racket-store-checksum-override.patch
new file mode 100644
index 0000000000..b22facca0d
--- /dev/null
+++ b/gnu/packages/patches/racket-store-checksum-override.patch
@@ -0,0 +1,42 @@
+Racket uses checksums to test if it needs to recompile its source
+files to bytecode. If Racket is updated by grafting, the source and
+bytecode files get updated, but the checksum stays the same. Since
+the checksum no longer matches the source file, Racket tries to
+regenerate the bytecode and write it to the store, causing errors
+because the store is immutable. This patch makes Racket ignore
+checksums for files in the store.
+
+See <https://debbugs.gnu.org/30680> for details.
+
+diff -ruN racket-6.12/collects/compiler/cm.rkt racket-6.12-patched/collects/compiler/cm.rkt
+--- racket-6.12/collects/compiler/cm.rkt 1969-12-31 19:00:00.000000000 -0500
++++ racket-6.12-patched/collects/compiler/cm.rkt 2018-08-12 06:36:46.061142149 -0400
+@@ -7,6 +7,7 @@
+ racket/list
+ racket/path
+ racket/promise
++ racket/string
+ openssl/sha1
+ racket/place
+ setup/collects
+@@ -627,6 +628,10 @@
+ #f
+ (list src-hash recorded-hash)))
+
++(define (store-reference? path)
++ (let ([store-prefix (or (getenv "NIX_STORE") "/gnu/store")])
++ (string-prefix? (path->string path) store-prefix)))
++
+ (define (rkt->ss p)
+ (if (path-has-extension? p #".rkt")
+ (path-replace-extension p #".ss")
+@@ -679,7 +684,8 @@
+ (trace-printf "newer src... ~a > ~a" path-time path-zo-time)
+ ;; If `sha1-only?', then `maybe-compile-zo' returns a #f or thunk:
+ (maybe-compile-zo sha1-only? deps path->mode roots path orig-path read-src-syntax up-to-date collection-cache new-seen)]
+- [(different-source-sha1-and-dep-recorded path deps)
++ [(and (not (store-reference? path))
++ (different-source-sha1-and-dep-recorded path deps))
+ => (lambda (difference)
+ (trace-printf "different src hash... ~a" difference)
+ ;; If `sha1-only?', then `maybe-compile-zo' returns a #f or thunk: