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; QuickLisp-to-Nix export
; Requires QuickLisp to be loaded
; Installs the QuickLisp version of all the packages processed (in the
; QuickLisp instance it uses)
(ql:quickload :cl-emb)
(ql:quickload :external-program)
(ql:quickload :cl-ppcre)
(ql:quickload :md5)
(ql:quickload :alexandria)
(defun nix-prefetch-url (url)
(let*
((stdout nil)
(stderr nil))
(setf
stdout
(with-output-to-string (so)
(setf
stderr
(with-output-to-string (se)
(external-program:run
"nix-prefetch-url"
(list url)
:search t :output so :error se)))))
(let*
((path-line (first (last (cl-ppcre:split (format nil "~%") stderr))))
(path (cl-ppcre:regex-replace-all "path is .(.*)." path-line "\\1")))
(list
:sha256 (first (cl-ppcre:split (format nil "~%") stdout))
:path path
:md5 (string-downcase
(format nil "~{~16,2,'0r~}"
(map 'list 'identity (md5:md5sum-file path))))))))
(defun system-data (system)
(ql:quickload system)
(let*
((asdf-system (asdf:find-system system))
(ql-system (ql-dist:find-system system))
(ql-release (ql-dist:release ql-system))
(url (ql-dist:archive-url ql-release))
(local-archive (ql-dist:local-archive-file ql-release))
(local-url (format nil "file://~a" (pathname local-archive)))
(archive-data
(progn
(ql-dist:ensure-local-archive-file ql-release)
(nix-prefetch-url local-url)))
(ideal-md5 (ql-dist:archive-md5 ql-release))
(file-md5 (getf archive-data :md5))
(raw-dependencies (asdf:system-depends-on asdf-system))
(dependencies (remove-if-not 'ql-dist:find-system raw-dependencies))
(deps (mapcar (lambda (x) (list :name x)) dependencies))
(name (string-downcase (format nil "~a" system)))
(description (asdf:system-description asdf-system))
(release-name (ql-dist:short-description ql-release))
(version (cl-ppcre:regex-replace-all
(format nil "~a-" name) release-name "")))
(assert (equal ideal-md5 file-md5))
(list
:system system
:description description
:sha256 (getf archive-data :sha256)
:url url
:md5 file-md5
:name name
:deps deps
:dependencies dependencies
:version version)))
(defmacro this-file ()
(or *compile-file-truename*
*load-truename*))
(defun nix-expression (system)
(cl-emb:execute-emb
(merge-pathnames #p"nix-package.emb" (this-file))
:env (system-data system)))
(defun nix-invocation (system)
(cl-emb:execute-emb
(merge-pathnames #p"invocation.emb" (this-file))
:env (system-data system)))
(defun systems-closure (systems)
(let*
((seen (make-hash-table :test 'equal)))
(loop
with queue := systems
with res := nil
while queue
for next := (pop queue)
for deps := (getf (system-data next) :dependencies)
unless (gethash next seen) do
(progn
(push next res)
(setf queue (append queue deps)))
do (setf (gethash next seen) t)
finally (return res))))
(defun ql-to-nix (target-directory)
(let*
((systems
(cl-ppcre:split
(format nil "~%")
(alexandria:read-file-into-string
(format nil "~a/quicklisp-to-nix-systems.txt" target-directory))))
(closure (systems-closure systems))
(invocations
(loop for s in closure
collect (list :code (nix-invocation s)))))
(loop
for s in closure
do (alexandria:write-string-into-file
(nix-expression s)
(format nil "~a/quicklisp-to-nix-output/~a.nix" target-directory s)
:if-exists :supersede))
(alexandria:write-string-into-file
(cl-emb:execute-emb
(merge-pathnames
#p"top-package.emb"
(this-file))
:env (list :invocations invocations))
(format nil "~a/quicklisp-to-nix.nix" target-directory)
:if-exists :supersede)))
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