gnu: perl: Return #t from all phases.

* gnu/packages/gd.scm (perl-gd-securityimage)
* gnu/packages/libevent.scm (perl-ev)
* gnu/packages/markup.scm (perl-text-markdown-discount)
* gnu/packages/perl-check.scm (perl-test2-bundle-extended)
* gnu/packages/perl.scm (perl-digest-md5, perl-encode-hanextra)
(perl-ipc-run, perl-pathtools)
* gnu/packages/photo.scm (perl-image-exiftool): Return #t from all phases.

gnu/packages/gd.scm

@@ -142,7 +142,7 @@ you can create PNG images on the fly or modify existing files.")
      '(#:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'set-env
-           (lambda _ (setenv "PERL_USE_UNSAFE_INC" "1"))))))
+           (lambda _ (setenv "PERL_USE_UNSAFE_INC" "1") #t)))))
     (native-inputs
      `(("perl-module-build" ,perl-module-build)))
     (propagated-inputs

gnu/packages/markup.scm

@@ -173,7 +173,8 @@ convert it to structurally valid XHTML (or HTML).")
                 (string-append
                       "OTHERLDFLAGS = -lmarkdown -Wl,-rpath="
                       (assoc-ref inputs "discount")
-                      "/lib"))))))))
+                      "/lib")))
+             #t)))))
     (inputs
      `(("discount" ,discount)))
     (home-page

gnu/packages/perl-check.scm

@@ -82,7 +82,7 @@ lexically, just dynamically.")
      '(#:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'set-env
-           (lambda _ (setenv "PERL_USE_UNSAFE_INC" "1"))))))
+           (lambda _ (setenv "PERL_USE_UNSAFE_INC" "1") #t)))))
     (propagated-inputs
      `(("perl-importer" ,perl-importer)
        ("perl-term-table" ,perl-term-table)

gnu/packages/perl.scm

@@ -2877,7 +2877,8 @@ interface for the RFC 2104 HMAC mechanism.")
          (add-after 'build 'set-permissions
            (lambda _
              ;; Make MD5.so read-write so it can be stripped.
-             (chmod "blib/arch/auto/Digest/MD5/MD5.so" #o755))))))
+             (chmod "blib/arch/auto/Digest/MD5/MD5.so" #o755)
+             #t)))))
     (home-page "https://metacpan.org/release/Digest-MD5")
     (synopsis "Perl interface to the MD-5 algorithm")
     (description
@@ -3003,7 +3004,7 @@ also known as JIS 2000.")
      '(#:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'set-env
-           (lambda _ (setenv "PERL_USE_UNSAFE_INC" "1"))))))
+           (lambda _ (setenv "PERL_USE_UNSAFE_INC" "1") #t)))))
     (home-page "https://metacpan.org/release/Encode-HanExtra")
     (synopsis "Additional Chinese encodings")
     (description "This Perl module provides Chinese encodings that are not
@@ -4278,7 +4279,8 @@ run interactively.  It also has an option to capture output/error buffers.")
                    (lambda _
                      ;; This test fails, and we're not really interested in
                      ;; it, so disable it.
-                     (delete-file "t/win32_compile.t"))))))
+                     (delete-file "t/win32_compile.t")
+                     #t)))))
     (home-page "https://metacpan.org/release/IPC-Run")
     (synopsis "Run system() and background procs w/ piping, redirs, ptys")
     (description "IPC::Run allows you run and interact with child processes
@@ -6867,7 +6869,8 @@ directory specifications in a cross-platform manner.")
              (substitute* "Cwd.pm"
                (("'/bin/pwd'")
                 (string-append "'" (assoc-ref inputs "coreutils")
-                               "/bin/pwd'"))))))))
+                               "/bin/pwd'")))
+             #t)))))
     (inputs
      `(("coreutils" ,coreutils)))
     (home-page "https://metacpan.org/release/PathTools")

gnu/packages/photo.scm

@@ -227,7 +227,8 @@ MTP, and much more.")
                     (pm  (find-files out "^ExifTool\\.pm$"))
                     (lib (dirname (dirname (car pm)))))
                (wrap-program (string-append out "/bin/exiftool")
-                             `("PERL5LIB" prefix (,lib)))))))))
+                 `("PERL5LIB" prefix (,lib)))
+               #t))))))
     (home-page "https://metacpan.org/release/Image-ExifTool")
     (synopsis "Program and Perl library to manipulate EXIF and other metadata")
     (description "This package provides the @code{exiftool} command and the