Subject: [bug#56446] [PATCH] profiles: Remove support for reading versions 0 and 1.

From: Ludovic Courtès <[email-masked]>
Date: Fri, 8 Jul 2022 11:27:50 +0200

Version 2 was introduced in commit
dedb17ad010ee9ef67f3f4f3997dd17f226c8090 (May 2015), which made it into
Guix 0.9.0.

* guix/profiles.scm (find-package): Remove.
(sexp->manifest)[infer-search-paths]: Remove.
Remove clauses for versions 0 and 1.
---
 guix/profiles.scm | 65 +----------------------------------------------
 1 file changed, 1 insertion(+), 64 deletions(-)

Hi,

This change will make it impossible to read profiles created before 2015,
which was way before 1.0.

I’ll go ahead and apply it if there are no objections.

Thanks,
Ludo’.

diff --git a/guix/profiles.scm b/guix/profiles.scm
index 701852ae98..a21cc432dc 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -507,34 +507,8 @@ (define (entry->gexp entry)
                                  (mapm %state-monad entry->gexp entries)
                                vlist-null))))))
 
-(define (find-package name version)
-  "Return a package from the distro matching NAME and possibly VERSION.  This
-procedure is here for backward-compatibility and will eventually vanish."
-  (define find-best-packages-by-name              ;break abstractions
-    (module-ref (resolve-interface '(gnu packages))
-                'find-best-packages-by-name))
-
-   ;; Use 'find-best-packages-by-name' and not 'find-packages-by-name'; the
-   ;; former traverses the module tree only once and then allows for efficient
-   ;; access via a vhash.
-   (match (find-best-packages-by-name name version)
-     ((p _ ...) p)
-     (_
-      (match (find-best-packages-by-name name #f)
-        ((p _ ...) p)
-        (_ #f)))))
-
 (define (sexp->manifest sexp)
   "Parse SEXP as a manifest."
-  (define (infer-search-paths name version)
-    ;; Infer the search path specifications for NAME-VERSION by looking up a
-    ;; same-named package in the distro.  Useful for the old manifest formats
-    ;; that did not store search path info.
-    (let ((package (find-package name version)))
-      (if package
-          (package-native-search-paths package)
-          '())))
-
   (define (infer-dependency item parent)
     ;; Return a <manifest-entry> for ITEM.
     (let-values (((name version)
@@ -620,44 +594,7 @@ (define* (sexp->manifest-entry sexp #:optional (parent (delay #f)))
              (return entry)))))))
 
   (match sexp
-    (('manifest ('version 0)
-                ('packages ((name version output path) ...)))
-     (manifest
-      (map (lambda (name version output path)
-             (manifest-entry
-               (name name)
-               (version version)
-               (output output)
-               (item path)
-               (search-paths (infer-search-paths name version))))
-           name version output path)))
-
-    ;; Version 1 adds a list of propagated inputs to the
-    ;; name/version/output/path tuples.
-    (('manifest ('version 1)
-                ('packages ((name version output path deps) ...)))
-     (manifest
-      (map (lambda (name version output path deps)
-             ;; Up to Guix 0.7 included, dependencies were listed as ("gmp"
-             ;; "/gnu/store/...-gmp") for instance.  Discard the 'label' in
-             ;; such lists.
-             (let ((deps (match deps
-                           (((labels directories) ...)
-                            directories)
-                           ((directories ...)
-                            directories))))
-               (letrec* ((deps* (map (cute infer-dependency <> (delay entry))
-                                     deps))
-                         (entry (manifest-entry
-                                  (name name)
-                                  (version version)
-                                  (output output)
-                                  (item path)
-                                  (dependencies deps*)
-                                  (search-paths
-                                   (infer-search-paths name version)))))
-                 entry)))
-           name version output path deps)))
+    ;; Versions 0 and 1 are no longer produced since 2015.
 
     ;; Version 2 adds search paths and is slightly more verbose.
     (('manifest ('version 2 minor-version ...)

base-commit: 43cf8861b8ff3e8b987b731f347e31ba8bdf00ae
-- 
2.36.1