gnu: Add Vnlog.

* gnu/packages/datamash.scm (vnlog): New public variable.

gnu/packages/datamash.scm

@@ -21,10 +21,16 @@ (define-module (gnu packages datamash)
   #:use-module (guix packages)
   #:use-module (guix licenses)
   #:use-module (guix download)
+  #:use-module (guix git-download)
   #:use-module (guix build-system gnu)
+  #:use-module (guix gexp)
+  #:use-module (guix utils)
   #:use-module (gnu packages)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages gawk)
   #:use-module (gnu packages perl)
-  #:use-module (gnu packages base))
+  #:use-module (gnu packages python)
+  #:use-module (gnu packages python-xyz))
 
 (define-public datamash
   (package
@@ -48,3 +54,99 @@ (define-public datamash
      "Perform basic numeric, textual and statistical operations on plain text
 files.  Designed to work within standard pipelines without additional code.")
     (license gpl3+)))
+
+(define-public vnlog
+  (package
+    (name "vnlog")
+    (version "1.32")
+    (home-page "https://github.com/dkogan/vnlog")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url home-page)
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1g4insm6gkw3c82fq8q9swkdha3cncbz1nib15yg9b2s4yl123hm"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     (list python-numpy))               ;for tests
+    (inputs
+     (list mawk
+           perl
+           perl-ipc-run
+           perl-list-moreutils
+           perl-string-shellquote
+           perl-text-diff
+           perl-text-table
+           python-wrapper))
+    (arguments
+     (list #:make-flags
+           #~(list (string-append "CC=" #$(cc-for-target))
+                   (string-append "DESTDIR=" #$output)
+                   "USRLIB=lib"
+                   "MANDIR=share/man"
+                   (string-append "PY3_MODULE_PATH=lib/python"
+                                  #$(version-major+minor
+                                     (package-version
+                                      (this-package-input "python-wrapper")))
+                                  "/site-packages")
+                   ;; Do not install the Python 2 modules.
+                   "DIST_PY2_MODULES=")
+           #:phases
+           #~(modify-phases %standard-phases
+               (add-after 'unpack 'adjust-Makefile
+                 (lambda _
+                   (substitute* "GNUmakefile"
+                     ;; Install Perl modules to the usual location.
+                     (("/usr/share/perl5")
+                      (string-append "/lib/perl5/site_perl/"
+                                     #$(package-version
+                                        (this-package-input "perl"))))
+                     ;; Do not add a '/usr' suffix to DESTDIR.
+                     (("\\$\\(DESTDIR\\)/usr")
+                      "$(DESTDIR)")
+                     ;; Do not strip RUNPATH from the installed C library.
+                     ((".*find.*chrpath.*")
+                      ""))))
+               (add-after 'unpack 'use-absolute-mawk
+                 (lambda* (#:key inputs #:allow-other-keys)
+                   (let ((mawk (search-input-file inputs "bin/mawk")))
+                     (substitute* '("vnl-filter" "lib/Vnlog/Util.pm")
+                       (("'mawk'")
+                        (string-append "'" mawk "'"))))))
+               (delete 'configure)
+               (add-before 'check 'disable-python2-test
+                 (lambda _
+                   (delete-file "test/test_python2_parser.sh")
+                   (substitute* "GNUmakefile"
+                     ((".*test/test_python2_parser\\.sh\\.RUN.*")
+                      ""))))
+               (add-after 'install 'wrap
+                 (lambda* (#:key inputs outputs #:allow-other-keys)
+                   (let* ((out (assoc-ref outputs "out"))
+                          (PERL5LIB (string-append
+                                     out "/lib/perl5/site_perl/"
+                                     #$(package-version
+                                        (this-package-input "perl"))
+                                     ":" (getenv "PERL5LIB"))))
+                     (for-each (lambda (script)
+                                 (wrap-program script
+                                   `("PERL5LIB" ":" prefix (,PERL5LIB))))
+                               (find-files (string-append out "/bin"))))))
+               (add-after 'wrap 'check-wrapped-executables
+                 (lambda* (#:key outputs #:allow-other-keys)
+                   (let ((out (assoc-ref outputs "out")))
+                     ;; Assert that the installed Perl scripts can find
+                     ;; their dependencies even when PERL5LIB is unset.
+                     (unsetenv "PERL5LIB")
+                     (for-each (lambda (script)
+                                 (invoke/quiet script "--help"))
+                               (find-files (string-append out "/bin")
+                                           "^vnl-[[:lower:]]+$"))))))))
+    (synopsis "Process labelled tabular ASCII data on the command line")
+    (description
+     "Vnlog (pronounced @dfn{vanillog}) is a toolkit for manipulating
+tabular ASCII data with labelled fields using regular command-line tools.")
+    (license lgpl2.1+)))