diff --git guix-1.5.0/gnu/packages/package-management.scm guix-1.5.0/gnu/packages/package-management.scm
index 21a9217..d1c8a62 100644
--- guix-1.5.0/gnu/packages/package-management.scm
+++ guix-1.5.0/gnu/packages/package-management.scm
@@ -155,6 +155,7 @@
   #:autoload   (guix channels) (channel?
                                 guix-channel?
                                 repository->guix-channel)
+  #:autoload   (guix base32) (bytevector->nix-base32-string)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix utils)
@@ -177,6 +178,112 @@
          (string-append "http://alpha.gnu.org/gnu/guix/bootstrap/"
                         arch "-linux"
                         "/20131110/guile-2.0.9.tar.xz"))))
+
+(define %local-bootstrap-base-url
+  "http://127.0.0.1:38445")
+
+(define (origin-base32-string origin)
+  (bytevector->nix-base32-string
+   (content-hash-value (origin-hash origin))))
+
+(define (origin-uri-string origin)
+  (match (origin-uri origin)
+    ((head . _) head)
+    (uri uri)))
+
+(define (local-bootstrap-uri-path origin)
+  (let* ((uri (origin-uri-string origin))
+         (base-length (string-length %local-bootstrap-base-url)))
+    (if (and (<= base-length (string-length uri))
+             (string=? %local-bootstrap-base-url
+                       (substring uri 0 base-length)))
+        (substring uri base-length)
+        uri)))
+
+(define %guix-local-bootstrap-source-patch
+  (plain-file
+   "guix-local-bootstrap-source.patch"
+   (format #f "\
+diff --git a/gnu/packages/bootstrap.scm b/gnu/packages/bootstrap.scm
+--- a/gnu/packages/bootstrap.scm
++++ b/gnu/packages/bootstrap.scm
+@@ -164,15 +164,12 @@
+ (define %bootstrap-executable-base-urls
+   ;; This is where the bootstrap executables come from.
+-  '(\"https://ftpmirror.gnu.org/guix/bootstrap/\"
+-    \"https://git.savannah.gnu.org/cgit/guix.git/plain/gnu/packages/bootstrap/\"
+-    \"https://alpha.gnu.org/gnu/guix/bootstrap/\"
+-    \"http://flashner.co.il/guix/bootstrap/\"
+-    \"http://lilypond.org/janneke/guix/\"))
++  '(\"~a/\"))
+ 
+ (define (bootstrap-executable-file-name system program)
+   \"Return the FILE-NAME part of url where PROGRAM can be found for SYSTEM.\"
+   (match system
++    (\"i686-linux\" (string-append \"i686-linux/bootstrap-exec-\" program \"-i686-linux\"))
+     (\"powerpc64le-linux\" (string-append system \"/20210106/\" program))
+     (\"i586-gnu\" (string-append system \"/20200326/\" program))
+     (\"x86_64-gnu\" (string-append system \"/20241122/\" program))
+@@ -357,8 +354,9 @@
+-(define %bootstrap-base-urls
+-  ;; This is where the initial binaries come from.
++(define %bootstrap-linux-headers-base-urls
++  ;; Keep linux headers as an explicit exception: text headers can still come
++  ;; from the historical bootstrap mirrors.
+   '(\"https://ftpmirror.gnu.org/guix/bootstrap/\"
+     \"https://ftp.gnu.org/gnu/guix/bootstrap\"
+     \"https://alpha.gnu.org/gnu/guix/bootstrap\"
+@@ -369,6 +367,10 @@
+     \"http://flashner.co.il/guix/bootstrap\"
+     \"http://lilypond.org/janneke/guix/\"))
+ 
++(define %bootstrap-base-urls
++  ;; All bootstrap binaries must come from the local bootstrap mirror.
++  '(\"~a\"))
++
+ (define (bootstrap-guile-url-path system)
+   \"Return the URI for FILE.\"
+   (string-append \"/\" system
+@@ -387,6 +389,10 @@
+                    \"/20210106/guile-static-stripped-2.0.14-powerpc64le-linux-gnu.tar.xz\")
+                    (\"riscv64-linux\"
+                     \"/20210725/guile-3.0.2.tar.xz\")
++                   (\"x86_64-linux\"
++                    \"~a\")
++                   (\"i686-linux\"
++                    \"~a\")
+                    (_
+                     \"/20131110/guile-2.0.9.tar.xz\"))))
+ 
+@@ -395,9 +401,9 @@
+   (match system
+     (\"x86_64-linux\"
+-     (base32 \"1w2p5zyrglzzniqgvyn1b55vprfzhgk8vzbzkkbdgl5248si0yq3\"))
++     (base32 \"~a\"))
+     (\"i686-linux\"
+-     (base32 \"0im800m30abgh7msh331pcbjvb4n02smz5cfzf1srv0kpx3csmxp\"))
++     (base32 \"~a\"))
+     (\"mips64el-linux\"
+      (base32 \"0fzp93lvi0hn54acc0fpvhc7bvl0yc853k62l958cihk03q80ilr\"))
+     (\"armhf-linux\"
+@@ -684,7 +690,7 @@
+        (uri (map (cute string-append <>
+                        \"/i686-linux/20190815/\"
+                        \"linux-libre-headers-stripped-4.14.67-i686-linux.tar.xz\")
+-                 %bootstrap-base-urls))
++                 %bootstrap-linux-headers-base-urls))
+        (sha256
+         (base32
+          \"0sm2z9x4wk45bh6qfs94p0w1d6hsy6dqx9sw38qsqbvxwa1qzk8s\"))))
+"
+           %local-bootstrap-base-url
+           %local-bootstrap-base-url
+           (local-bootstrap-uri-path
+            (bootstrap-guile-origin "x86_64-linux"))
+           (local-bootstrap-uri-path
+            (bootstrap-guile-origin "i686-linux"))
+           (origin-base32-string (bootstrap-guile-origin "x86_64-linux"))
+           (origin-base32-string (bootstrap-guile-origin "i686-linux")))))
 
 ;; NOTE: The commit IDs used here form a linked list threaded through the git
 ;; history. In a phenomenon known as boot-stripping, not only the head of this
@@ -214,7 +282,8 @@
                 (sha256
                  (base32
                   "0z1ixlkzsaj978nh57179871xkzbf8zsf10xkcfs2647iznkx7az"))
-                (file-name (string-append "guix-" version "-checkout"))))
+                (file-name (string-append "guix-" version "-checkout"))
+                (patches (list %guix-local-bootstrap-source-patch))))
       (build-system gnu-build-system)
       (arguments
        `(;; For reproducibility, see <https://issues.guix.gnu.org/74204>.