added a manifest.scm for guix

manifest.scm

@@ -0,0 +1,26 @@
+;; This is the complete list of Guix packages necessary for building.
+;;
+;; The following shell command will run the tests:
+;;
+;; guix shell -m manifest.scm --pure -- ./build.sh ath79 generic tplink_tl-wdr4300-v1
+;;
+;; TODO ...ideally. some dependencies are not listed, and it fails when using --pure
+
+;;
+;; Quircks on Guix: the check for git fails, must edit
+;; build/openwrt-imagebuilder-19.07.9-ath79-generic.Linux-x86_64/include/prereq-build.mk
+;; and comment out the git check.
+;;
+
+(specifications->manifest
+ '("coreutils"
+   "bash"
+   "make"
+   "perl"
+   "python2"
+   "gcc-toolchain"
+   "git"
+   "git:gui"
+   ;; "man-pages"
+   "less"
+   "time"))