;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2014 Alex Kost <alezost@gmail.com> ;;; ;;; This file is part of GNU Guix. ;;; ;;; GNU Guix is free software; you can redistribute it and/or modify it ;;; under the terms of the GNU General Public License as published by ;;; the Free Software Foundation; either version 3 of the License, or (at ;;; your option) any later version. ;;; ;;; GNU Guix is distributed in the hope that it will be useful, but ;;; WITHOUT ANY WARRANTY; without even the implied warranty of ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;;; GNU General Public License for more details. ;;; ;;; You should have received a copy of the GNU General Public License ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. ;;; Commentary: ;; Information about packages and generations is passed to the elisp ;; side in the form of alists of parameters (such as ‘name’ or ;; ‘version’) and their values. ;; ‘entries’ procedure is the “entry point” for the elisp side to get ;; information about packages and generations. ;; Since name/version pair is not necessarily unique, we use ;; `object-address' to identify a package (for ‘id’ parameter), if ;; possible. However for the obsolete packages (that can be found in ;; installed manifest but not in a package directory), ‘id’ parameter is ;; still "name-version" string. So ‘id’ package parameter in the code ;; below is either an object-address number or a full-name string. ;; To speed-up the process of getting information, the following ;; auxiliary variables are used: ;; ;; - `%packages' - VHash of "package address"/"package" pairs. ;; ;; - `%package-table' - Hash table of ;; "name+version key"/"list of packages" pairs. ;;; Code: (use-modules (ice-9 vlist) (ice-9 match) (srfi srfi-1) (srfi srfi-2) (srfi srfi-11) (srfi srfi-19) (srfi srfi-26) (guix) (guix git-download) (guix packages) (guix profiles) (guix licenses) (guix utils) (guix ui) (guix scripts package) (guix scripts pull) (gnu packages)) (define-syntax-rule (first-or-false lst) (and (not (null? lst)) (first lst))) (define (list-maybe obj) (if (list? obj) obj (list obj))) (define full-name->name+version package-name->name+version) (define (name+version->full-name name version) (string-append name "-" version)) (define* (make-package-specification name #:optional version output) (let ((full-name (if version (name+version->full-name name version) name))) (if output (string-append full-name ":" output) full-name))) (define name+version->key cons) (define key->name+version car+cdr) (define %packages (fold-packages (lambda (pkg res) (vhash-consq (object-address pkg) pkg res)) vlist-null)) (define %package-table (let ((table (make-hash-table (vlist-length %packages)))) (vlist-for-each (lambda (elem) (match elem ((address . pkg) (let* ((key (name+version->key (package-name pkg) (package-version pkg))) (ref (hash-ref table key))) (hash-set! table key (if ref (cons pkg ref) (list pkg))))))) %packages) table)) (define (manifest-entry->name+version+output entry) (values (manifest-entry-name entry) (manifest-entry-version entry) (manifest-entry-output entry))) (define (manifest-entry->package-specification entry) (call-with-values (lambda () (manifest-entry->name+version+output entry)) make-package-specification)) (define (manifest-entries->package-specifications entries) (map manifest-entry->package-specification entries)) (define (generation-package-specifications profile number) "Return a list of package specifications for generation NUMBER." (let ((manifest (profile-manifest (generation-file-name profile number)))) (manifest-entries->package-specifications (manifest-entries manifest)))) (define (generation-package-specifications+paths profile number) "Return a list of package specifications and paths for generation NUMBER. Each element of the list is a list of the package specification and its path." (let ((manifest (profile-manifest (generation-file-name profile number)))) (map (lambda (entry) (list (manifest-entry->package-specification entry) (manifest-entry-item entry))) (manifest-entries manifest)))) (define (generation-difference profile number1 number2) "Return a list of package specifications for outputs installed in generation NUMBER1 and not installed in generation NUMBER2." (let ((specs1 (generation-package-specifications profile number1)) (specs2 (generation-package-specifications profile number2))) (lset-difference string=? specs1 specs2))) (define (manifest-entries->hash-table entries) "Return a hash table of name keys and lists of matching manifest ENTRIES." (let ((table (make-hash-table (length entries)))) (for-each (lambda (entry) (let* ((key (manifest-entry-name entry)) (ref (hash-ref table key))) (hash-set! table key (if ref (cons entry ref) (list entry))))) entries) table)) (define (manifest=? m1 m2) (or (eq? m1 m2) (equal? m1 m2))) (define manifest->hash-table (let ((current-manifest #f) (current-table #f)) (lambda (manifest) "Return a hash table of name keys and matching MANIFEST entries." (unless (manifest=? manifest current-manifest) (set! current-manifest manifest) (set! current-table (manifest-entries->hash-table (manifest-entries manifest)))) current-table))) (define* (manifest-entries-by-name manifest name #:optional version output) "Return a list of MANIFEST entries matching NAME, VERSION and OUTPUT." (let ((entries (or (hash-ref (manifest->hash-table manifest) name) '()))) (if (or version output) (filter (lambda (entry) (and (or (not version) (equal? version (manifest-entry-version entry))) (or (not output) (equal? output (manifest-entry-output entry))))) entries) entries))) (define (manifest-entry-by-output entries output) "Return a manifest entry from ENTRIES matching OUTPUT." (find (lambda (entry) (string= output (manifest-entry-output entry))) entries)) (define (fold-manifest-by-name manifest proc init) "Fold over MANIFEST entries. Call (PROC NAME VERSION ENTRIES RESULT), using INIT as the initial value of RESULT. ENTRIES is a list of manifest entries with NAME/VERSION." (hash-fold (lambda (name entries res) (proc name (manifest-entry-version (car entries)) entries res)) init (manifest->hash-table manifest))) (define* (object-transformer param-alist #:optional (params '())) "Return procedure transforming objects into alist of parameter/value pairs. PARAM-ALIST is alist of available parameters (symbols) and procedures returning values of these parameters. Each procedure is applied to objects. PARAMS is list of parameters from PARAM-ALIST that should be returned by a resulting procedure. If PARAMS is not specified or is an empty list, use all available parameters. Example: (let* ((alist `((plus1 . ,1+) (minus1 . ,1-) (mul2 . ,(cut * 2 <>)))) (number->alist (object-transformer alist '(plus1 mul2)))) (number->alist 8)) => ((plus1 . 9) (mul2 . 16)) " (let* ((use-all-params (null? params)) (alist (filter-map (match-lambda ((param . proc) (and (or use-all-params (memq param params)) (cons param proc))) (_ #f)) param-alist))) (lambda objects (map (match-lambda ((param . proc) (cons param (apply proc objects)))) alist)))) (define %manifest-entry-param-alist `((output . ,manifest-entry-output) (path . ,manifest-entry-item) (dependencies . ,manifest-entry-dependencies))) (define manifest-entry->sexp (object-transformer %manifest-entry-param-alist)) (define (manifest-entries->sexps entries) (map manifest-entry->sexp entries)) (define (package-inputs-names inputs) "Return a list of full names of the packages from package INPUTS." (filter-map (match-lambda ((_ (? package? package)) (package-full-name package)) (_ #f)) inputs)) (define (package-license-names package) "Return a list of license names of the PACKAGE." (filter-map (lambda (license) (and (license? license) (license-name license))) (list-maybe (package-license package)))) (define (package-source-names package) "Return a list of source names (URLs) of the PACKAGE." (let ((source (package-source package))) (and (origin? source) (filter-map (lambda (uri) (cond ((string? uri) uri) ((git-reference? uri) (git-reference-url uri)) (else "Unknown source type"))) (list-maybe (origin-uri source)))))) (define (package-unique? package) "Return #t if PACKAGE is a single package with such name/version." (null? (cdr (packages-by-name (package-name package) (package-version package))))) (define %package-param-alist `((id . ,object-address) (package-id . ,object-address) (name . ,package-name) (version . ,package-version) (license . ,package-license-names) (source . ,package-source-names) (synopsis . ,package-synopsis) (description . ,package-description) (home-url . ,package-home-page) (outputs . ,package-outputs) (non-unique . ,(negate package-unique?)) (inputs . ,(lambda (pkg) (package-inputs-names (package-inputs pkg)))) (native-inputs . ,(lambda (pkg) (package-inputs-names (package-native-inputs pkg)))) (propagated-inputs . ,(lambda (pkg) (package-inputs-names (package-propagated-inputs pkg)))) (location . ,(lambda (pkg) (location->string (package-location pkg)))))) (define (package-param package param) "Return a value of a PACKAGE PARAM." (and=> (assq-ref %package-param-alist param) (cut <> package))) ;;; Finding packages. (define (package-by-address address) (and=> (vhash-assq address %packages) cdr)) (define (packages-by-name+version name version) (or (hash-ref %package-table (name+version->key name version)) '())) (define (packages-by-full-name full-name) (call-with-values (lambda () (full-name->name+version full-name)) packages-by-name+version)) (define (packages-by-id id) (if (integer? id) (let ((pkg (package-by-address id))) (if pkg (list pkg) '())) (packages-by-full-name id))) (define (id->name+version id) (if (integer? id) (and=> (package-by-address id) (lambda (pkg) (values (package-name pkg) (package-version pkg)))) (full-name->name+version id))) (define (package-by-id id) (first-or-false (packages-by-id id))) (define (newest-package-by-id id) (and=> (id->name+version id) (lambda (name) (first-or-false (find-best-packages-by-name name #f))))) (define (matching-packages predicate) (fold-packages (lambda (pkg res) (if (predicate pkg) (cons pkg res) res)) '())) (define (filter-packages-by-output packages output) (filter (lambda (package) (member output (package-outputs package))) packages)) (define* (packages-by-name name #:optional version output) "Return a list of packages matching NAME, VERSION and OUTPUT." (let ((packages (if version (packages-by-name+version name version) (matching-packages (lambda (pkg) (string=? name (package-name pkg))))))) (if output (filter-packages-by-output packages output) packages))) (define (manifest-entry->packages entry) (call-with-values (lambda () (manifest-entry->name+version+output entry)) packages-by-name)) (define (packages-by-regexp regexp match-params) "Return a list of packages matching REGEXP string. MATCH-PARAMS is a list of parameters that REGEXP can match." (define (package-match? package regexp) (any (lambda (param) (let ((val (package-param package param))) (and (string? val) (regexp-exec regexp val)))) match-params)) (let ((re (make-regexp regexp regexp/icase))) (matching-packages (cut package-match? <> re)))) (define (all-available-packages) "Return a list of all available packages." (matching-packages (const #t))) (define (newest-available-packages) "Return a list of the newest available packages." (vhash-fold (lambda (name elem res) (match elem ((_ newest pkgs ...) (cons newest res)))) '() (find-newest-available-packages))) ;;; Making package/output patterns. (define (specification->package-pattern specification) (call-with-values (lambda () (full-name->name+version specification)) list)) (define (specification->output-pattern specification) (call-with-values (lambda () (package-specification->name+version+output specification #f)) list)) (define (id->package-pattern id) (if (integer? id) (package-by-address id) (specification->package-pattern id))) (define (id->output-pattern id) "Return an output pattern by output ID. ID should be '<package-address>:<output>' or '<name>-<version>:<output>'." (let-values (((name version output) (package-specification->name+version+output id))) (if version (list name version output) (list (package-by-address (string->number name)) output)))) (define (specifications->package-patterns . specifications) (map specification->package-pattern specifications)) (define (specifications->output-patterns . specifications) (map specification->output-pattern specifications)) (define (ids->package-patterns . ids) (map id->package-pattern ids)) (define (ids->output-patterns . ids) (map id->output-pattern ids)) (define* (manifest-patterns-result packages res obsolete-pattern #:optional installed-pattern) "Auxiliary procedure for 'manifest-package-patterns' and 'manifest-output-patterns'." (if (null? packages) (cons (obsolete-pattern) res) (if installed-pattern ;; We don't need duplicates for a list of installed packages, ;; so just take any (car) package. (cons (installed-pattern (car packages)) res) res))) (define* (manifest-package-patterns manifest #:optional obsolete-only?) "Return a list of package patterns for MANIFEST entries. If OBSOLETE-ONLY? is #f, use all entries, otherwise make patterns only for obsolete packages." (fold-manifest-by-name manifest (lambda (name version entries res) (manifest-patterns-result (packages-by-name name version) res (lambda () (list name version entries)) (and (not obsolete-only?) (cut list <> entries)))) '())) (define* (manifest-output-patterns manifest #:optional obsolete-only?) "Return a list of output patterns for MANIFEST entries. If OBSOLETE-ONLY? is #f, use all entries, otherwise make patterns only for obsolete packages." (fold (lambda (entry res) (manifest-patterns-result (manifest-entry->packages entry) res (lambda () entry) (and (not obsolete-only?) (cut list <> entry)))) '() (manifest-entries manifest))) (define (obsolete-package-patterns manifest) (manifest-package-patterns manifest #t)) (define (obsolete-output-patterns manifest) (manifest-output-patterns manifest #t)) ;;; Transforming package/output patterns into alists. (define (obsolete-package-sexp name version entries) "Return an alist with information about obsolete package. ENTRIES is a list of installed manifest entries." `((id . ,(name+version->full-name name version)) (name . ,name) (version . ,version) (outputs . ,(map manifest-entry-output entries)) (obsolete . #t) (installed . ,(manifest-entries->sexps entries)))) (define (package-pattern-transformer manifest params) "Return 'package-pattern->package-sexps' procedure." (define package->sexp (object-transformer %package-param-alist params)) (define* (sexp-by-package package #:optional (entries (manifest-entries-by-name manifest (package-name package) (package-version package)))) (cons (cons 'installed (manifest-entries->sexps entries)) (package->sexp package))) (define (->sexps pattern) (match pattern ((? package? package) (list (sexp-by-package package))) (((? package? package) entries) (list (sexp-by-package package entries))) ((name version entries) (list (obsolete-package-sexp name version entries))) ((name version) (let ((packages (packages-by-name name version))) (if (null? packages) (let ((entries (manifest-entries-by-name manifest name version))) (if (null? entries) '() (list (obsolete-package-sexp name version entries)))) (map sexp-by-package packages)))) (_ '()))) ->sexps) (define (output-pattern-transformer manifest params) "Return 'output-pattern->output-sexps' procedure." (define package->sexp (object-transformer (alist-delete 'id %package-param-alist) params)) (define manifest-entry->sexp (object-transformer (alist-delete 'output %manifest-entry-param-alist) params)) (define* (output-sexp pkg-alist pkg-address output #:optional entry) (let ((entry-alist (if entry (manifest-entry->sexp entry) '())) (base `((id . ,(string-append (number->string pkg-address) ":" output)) (output . ,output) (installed . ,(->bool entry))))) (append entry-alist base pkg-alist))) (define (obsolete-output-sexp entry) (let-values (((name version output) (manifest-entry->name+version+output entry))) (let ((base `((id . ,(make-package-specification name version output)) (package-id . ,(name+version->full-name name version)) (name . ,name) (version . ,version) (output . ,output) (obsolete . #t) (installed . #t)))) (append (manifest-entry->sexp entry) base)))) (define* (sexps-by-package package #:optional output (entries (manifest-entries-by-name manifest (package-name package) (package-version package)))) ;; Assuming that PACKAGE has this OUTPUT. (let ((pkg-alist (package->sexp package)) (address (object-address package)) (outputs (if output (list output) (package-outputs package)))) (map (lambda (output) (output-sexp pkg-alist address output (manifest-entry-by-output entries output))) outputs))) (define* (sexps-by-manifest-entry entry #:optional (packages (manifest-entry->packages entry))) (if (null? packages) (list (obsolete-output-sexp entry)) (map (lambda (package) (output-sexp (package->sexp package) (object-address package) (manifest-entry-output entry) entry)) packages))) (define (->sexps pattern) (match pattern ((? package? package) (sexps-by-package package)) ((package (? string? output)) (sexps-by-package package output)) ((? manifest-entry? entry) (list (obsolete-output-sexp entry))) ((package entry) (sexps-by-manifest-entry entry (list package))) ((name version output) (let ((packages (packages-by-name name version output))) (if (null? packages) (let ((entries (manifest-entries-by-name manifest name version output))) (append-map (cut sexps-by-manifest-entry <>) entries)) (append-map (cut sexps-by-package <> output) packages)))) (_ '()))) ->sexps) (define (entry-type-error entry-type) (error (format #f "Wrong entry-type '~a'" entry-type))) (define (search-type-error entry-type search-type) (error (format #f "Wrong search type '~a' for entry-type '~a'" search-type entry-type))) (define %pattern-transformers `((package . ,package-pattern-transformer) (output . ,output-pattern-transformer))) (define (pattern-transformer entry-type) (assq-ref %pattern-transformers entry-type)) ;; All procedures from inner alists are called with (MANIFEST . SEARCH-VALS) ;; as arguments; see `package/output-sexps'. (define %patterns-makers (let* ((apply-to-rest (lambda (proc) (lambda (_ . rest) (apply proc rest)))) (apply-to-first (lambda (proc) (lambda (first . _) (proc first)))) (manifest-package-proc (apply-to-first manifest-package-patterns)) (manifest-output-proc (apply-to-first manifest-output-patterns)) (regexp-proc (lambda (_ regexp params . __) (packages-by-regexp regexp params))) (all-proc (lambda _ (all-available-packages))) (newest-proc (lambda _ (newest-available-packages)))) `((package (id . ,(apply-to-rest ids->package-patterns)) (name . ,(apply-to-rest specifications->package-patterns)) (installed . ,manifest-package-proc) (generation . ,manifest-package-proc) (obsolete . ,(apply-to-first obsolete-package-patterns)) (regexp . ,regexp-proc) (all-available . ,all-proc) (newest-available . ,newest-proc)) (output (id . ,(apply-to-rest ids->output-patterns)) (name . ,(apply-to-rest specifications->output-patterns)) (installed . ,manifest-output-proc) (generation . ,manifest-output-proc) (obsolete . ,(apply-to-first obsolete-output-patterns)) (regexp . ,regexp-proc) (all-available . ,all-proc) (newest-available . ,newest-proc))))) (define (patterns-maker entry-type search-type) (or (and=> (assq-ref %patterns-makers entry-type) (cut assq-ref <> search-type)) (search-type-error entry-type search-type))) (define (package/output-sexps profile params entry-type search-type search-vals) "Return information about packages or package outputs. See 'entry-sexps' for details." (let* ((profile (if (eq? search-type 'generation) (generation-file-name profile (car search-vals)) profile)) (manifest (profile-manifest profile)) (patterns (if (and (eq? entry-type 'output) (eq? search-type 'generation-diff)) (match search-vals ((g1 g2) (map specification->output-pattern (generation-difference profile g1 g2))) (_ '())) (apply (patterns-maker entry-type search-type) manifest search-vals))) (->sexps ((pattern-transformer entry-type) manifest params))) (append-map ->sexps patterns))) ;;; Getting information about generations. (define (generation-param-alist profile) "Return an alist of generation parameters and procedures for PROFILE." (let ((current (generation-number profile))) `((id . ,identity) (number . ,identity) (prev-number . ,(cut previous-generation-number profile <>)) (current . ,(cut = current <>)) (path . ,(cut generation-file-name profile <>)) (time . ,(lambda (gen) (time-second (generation-time profile gen))))))) (define (matching-generations profile predicate) "Return a list of PROFILE generations matching PREDICATE." (filter predicate (profile-generations profile))) (define (last-generations profile number) "Return a list of last NUMBER generations. If NUMBER is 0 or less, return all generations." (let ((generations (profile-generations profile)) (number (if (<= number 0) +inf.0 number))) (if (> (length generations) number) (list-head (reverse generations) number) generations))) (define (find-generations profile search-type search-vals) "Find PROFILE's generations matching SEARCH-TYPE and SEARCH-VALS." (case search-type ((id) (matching-generations profile (cut memq <> search-vals))) ((last) (last-generations profile (car search-vals))) ((all) (last-generations profile +inf.0)) ((time) (match search-vals ((from to) (matching-generations profile (lambda (gen) (let ((time (time-second (generation-time profile gen)))) (< from time to))))) (_ '()))) (else (search-type-error "generation" search-type)))) (define (generation-sexps profile params search-type search-vals) "Return information about generations. See 'entry-sexps' for details." (let ((generations (find-generations profile search-type search-vals)) (->sexp (object-transformer (generation-param-alist profile) params))) (map ->sexp generations))) ;;; Getting package/output/generation entries (alists). (define (entries profile params entry-type search-type search-vals) "Return information about entries. ENTRY-TYPE is a symbol defining a type of returning information. Should be: 'package', 'output' or 'generation'. SEARCH-TYPE and SEARCH-VALS define how to get the information. SEARCH-TYPE should be one of the following symbols: - If ENTRY-TYPE is 'package' or 'output': 'id', 'name', 'regexp', 'all-available', 'newest-available', 'installed', 'obsolete', 'generation'. - If ENTRY-TYPE is 'generation': 'id', 'last', 'all', 'time'. PARAMS is a list of parameters for receiving. If it is an empty list, get information with all available parameters, which are: - If ENTRY-TYPE is 'package': 'id', 'name', 'version', 'outputs', 'license', 'synopsis', 'description', 'home-url', 'inputs', 'native-inputs', 'propagated-inputs', 'location', 'installed'. - If ENTRY-TYPE is 'output': 'id', 'package-id', 'name', 'version', 'output', 'license', 'synopsis', 'description', 'home-url', 'inputs', 'native-inputs', 'propagated-inputs', 'location', 'installed', 'path', 'dependencies'. - If ENTRY-TYPE is 'generation': 'id', 'number', 'prev-number', 'path', 'time'. Returning value is a list of alists. Each alist consists of parameter/value pairs." (case entry-type ((package output) (package/output-sexps profile params entry-type search-type search-vals)) ((generation) (generation-sexps profile params search-type search-vals)) (else (entry-type-error entry-type)))) ;;; Package actions. (define* (package->manifest-entry* package #:optional output) (and package (begin (check-package-freshness package) (package->manifest-entry package output)))) (define* (make-install-manifest-entries id #:optional output) (package->manifest-entry* (package-by-id id) output)) (define* (make-upgrade-manifest-entries id #:optional output) (package->manifest-entry* (newest-package-by-id id) output)) (define* (make-manifest-pattern id #:optional output) "Make manifest pattern from a package ID and OUTPUT." (let-values (((name version) (id->name+version id))) (and name version (manifest-pattern (name name) (version version) (output output))))) (define (convert-action-pattern pattern proc) "Convert action PATTERN into a list of objects returned by PROC. PROC is called: (PROC ID) or (PROC ID OUTPUT)." (match pattern ((id . outputs) (if (null? outputs) (let ((obj (proc id))) (if obj (list obj) '())) (filter-map (cut proc id <>) outputs))) (_ '()))) (define (convert-action-patterns patterns proc) (append-map (cut convert-action-pattern <> proc) patterns)) (define* (process-package-actions profile #:key (install '()) (upgrade '()) (remove '()) (use-substitutes? #t) dry-run?) "Perform package actions. INSTALL, UPGRADE, REMOVE are lists of 'package action patterns'. Each pattern should have the following form: (ID . OUTPUTS) ID is an object address or a full-name of a package. OUTPUTS is a list of package outputs (may be an empty list)." (format #t "The process begins ...~%") (let* ((install (append (convert-action-patterns install make-install-manifest-entries) (convert-action-patterns upgrade make-upgrade-manifest-entries))) (remove (convert-action-patterns remove make-manifest-pattern)) (transaction (manifest-transaction (install install) (remove remove))) (manifest (profile-manifest profile)) (new-manifest (manifest-perform-transaction manifest transaction))) (unless (and (null? install) (null? remove)) (with-store store (let* ((derivation (run-with-store store (profile-derivation new-manifest))) (derivations (list derivation)) (new-profile (derivation->output-path derivation))) (set-build-options store #:print-build-trace #f #:use-substitutes? use-substitutes?) (show-manifest-transaction store manifest transaction #:dry-run? dry-run?) (show-what-to-build store derivations #:use-substitutes? use-substitutes? #:dry-run? dry-run?) (unless dry-run? (let ((name (generation-file-name profile (+ 1 (generation-number profile))))) (and (build-derivations store derivations) (let* ((entries (manifest-entries new-manifest)) (count (length entries))) (switch-symlinks name new-profile) (switch-symlinks profile name) (format #t (N_ "~a package in profile~%" "~a packages in profile~%" count) count)))))))))) (define (delete-generations* profile generations) "Delete GENERATIONS from PROFILE. GENERATIONS is a list of generation numbers." (with-store store (delete-generations store profile generations))) (define (package-source-derivation->store-path derivation) "Return a store path of the package source DERIVATION." (match (derivation-outputs derivation) ;; Source derivation is always (("out" . derivation)). (((_ . output-drv)) (derivation-output-path output-drv)) (_ #f))) (define (package-source-path package-id) "Return a store file path to a source of a package PACKAGE-ID." (and-let* ((package (package-by-id package-id)) (source (package-source package))) (with-store store (package-source-derivation->store-path (package-source-derivation store source))))) (define* (package-source-build-derivation package-id #:key dry-run? (use-substitutes? #t)) "Build source derivation of a package PACKAGE-ID." (and-let* ((package (package-by-id package-id)) (source (package-source package))) (with-store store (let* ((derivation (package-source-derivation store source)) (derivations (list derivation))) (set-build-options store #:print-build-trace #f #:use-substitutes? use-substitutes?) (show-what-to-build store derivations #:use-substitutes? use-substitutes? #:dry-run? dry-run?) (unless dry-run? (build-derivations store derivations)) (format #t "The source store path: ~a~%" (package-source-derivation->store-path derivation))))))