doc: update dependencies for CentOS 7.x

Digest::SHA is the most notable missing package at runtime
for a minimal system.

Tests don't run at all without Test::Simple (or Test::More).
Plack::Test is also a separate package, too...

Also, the package for IO::Compress::Gzip should be IO::Compress;
as perl-PerlIO-gzip is a different thing entirely which is not
relevant to our needs.

Test::HTTP::Server::Simple doesn't seem required at all for Plack
tests.

ExtUtils::MakeMaker needs to be documented as a install dependency
for people installing this, too; since AFAIK public-inbox is not
yet in any distros.

3 files changed, 56 insertions, 11 deletions

diff --git a/INSTALL b/INSTALL
index 0246299b..a661c776 100644
--- a/INSTALL
+++ b/INSTALL
@@ -36,6 +36,9 @@ Beyond that, there is a long list of Perl modules required, starting with:
                                    pkg: p5-TimeDate
                                    rpm: perl-TimeDate
 
+* Digest::SHA                      typically installed with Perl
+                                   rpm: perl-Digest-SHA
+
 * Email::MIME                      deb: libemail-mime-perl
                                    pkg: p5-Email-MIME
                                    rpm: perl-Email-MIME
@@ -132,8 +135,8 @@ above, so there is no need to explicitly install them:
                                    (for public-inbox-watch, pulled in by Plack)
 
 - IO::Compress::Gzip               deb: perl-modules (or libio-compress-perl)
-                                   rpm: perl-PerlIO-gzip
                                    pkg: perl5
+                                   rpm: perl-IO-Compress
                                    (for gzipped mbox over HTTP)
 
 Uncommonly needed modules:
@@ -156,18 +159,25 @@ Optional packages testing and development:
                                    pkg: p5-IPC-Run
                                    rpm: perl-IPC-Run
 
+- Plack::Test                      deb: libplack-test-perl
+                                   pkg: p5-Plack
+                                   rpm: perl-Plack-Test
+
+- Test::Simple                     deb: perl-modules-5.$MINOR
+                                   pkg: perl5
+                                   rpm: perl-Test-Simple
+
 - XML::Feed                        deb: libxml-feed-perl
                                    pkg: p5-XML-Feed
                                    rpm: perl-XML-Feed
 
-- Test::HTTP::Server::Simple       deb: libtest-http-server-simple-perl
-                                   pkg: p5-Test-HTTP-Server-Simple
-                                   rpm: perl-Test-HTTP-Server-Simple
-                                   (XXX is this really needed?)
-
 standard MakeMaker installation (Perl)
 --------------------------------------
 
+To use MakeMaker, you need to ensure ExtUtils::MakeMaker is available.
+This is typically installed with Perl, but RPM-based systems will likely
+need to install the `perl-ExtUtils-MakeMaker' package.
+
 Once the dependencies are installed, you should be able to build and
 install the system (into /usr/local) with:
 
diff --git a/Makefile.PL b/Makefile.PL
index b1274ad1..341d42af 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -28,6 +28,11 @@ WriteMakefile(
                 # We also depend on git.
                 # Keep this sorted and synced to the INSTALL document
                 'Date::Parse' => 0,
+
+                # libperl$PERL_VERSION,
+                # `perl5' on FreeBSD
+                # perl-Digest-SHA on RH-based
+                'Digest::SHA' => 0,
                 'Email::MIME' => 0,
 
                 # the following should be pulled in by Email::MIME:
@@ -44,6 +49,14 @@ WriteMakefile(
 
                 # We have more test dependencies, but do not force
                 # users to install them.  See INSTALL
+
+                # All Perl installs I know about have these, but RH-based
+                # distros make them separate even though 'perl' pulls them in
+                'File::Path' => 0,
+                'File::Temp' => 0,
+                'Getopt::Long' => 0,
+                'Exporter' => 0,
+                # ExtUtils::MakeMaker # this file won't run w/o it...
         },
         MAN3PODS => \%man3,
 );
diff --git a/ci/deps.perl b/ci/deps.perl
index faca4590..62870c1f 100755
--- a/ci/deps.perl
+++ b/ci/deps.perl
@@ -9,9 +9,11 @@ my $usage = "$0 PKG_FMT PROFILE [PROFILE_MOD]";
 my $pkg_fmt = shift;
 @ARGV or die $usage, "\n";
 
+my @test_essential = qw(Test::Simple Plack::Test);
+
 # package profiles
 my $profiles = {
-        # the smallest possible profile
+        # the smallest possible profile for testing
         # TODO: trim this, Plack pulls in Filesys::Notify::Simple,
         # and we don't need that for mda-only installs
         essential => [ qw(
@@ -19,14 +21,16 @@ my $profiles = {
                 perl
                 Date::Parse
                 Devel::Peek
+                Digest::SHA
                 Email::Simple
                 Email::MIME
                 Email::MIME::ContentType
                 Encode
+                ExtUtils::MakeMaker
                 Filesys::Notify::Simple
                 Plack
                 URI::Escape
-                ) ],
+                ), @test_essential ],
 
         # everything optional for normal use
         optional => [ qw(
@@ -44,10 +48,9 @@ my $profiles = {
                 xapian-compact
                 ) ],
 
-        # developer stuff
+        # optional developer stuff
         devtest => [ qw(
                 IPC::Run
-                Test::HTTP::Server::Simple
                 XML::Feed
                 curl
                 w3m
@@ -86,22 +89,41 @@ my $non_auto = {
                 deb => 'perl', # libperl5.XX, but the XX varies
                 pkg => 'perl5',
         },
+        'Digest::SHA' => {
+                deb => 'perl', # libperl5.XX, but the XX varies
+                pkg => 'perl5',
+        },
         'Encode' => {
                 deb => 'perl', # libperl5.XX, but the XX varies
                 pkg => 'perl5',
                 rpm => 'perl-Encode',
         },
+        'ExtUtils::MakeMaker' => {
+                deb => 'perl', # perl-modules-5.xx
+                pkg => 'perl5',
+                rpm => 'perl-ExtUtils-MakeMaker',
+        },
         'IO::Compress::Gzip' => {
                 deb => 'perl', # perl-modules-5.xx
                 pkg => 'perl5',
-                rpm => 'perl-PerlIO-gzip',
+                rpm => 'perl-IO-Compress',
         },
         'DBD::SQLite' => { deb => 'libdbd-sqlite3-perl' },
+        'Plack::Test' => {
+                deb => 'libplack-perl',
+                pkg => 'p5-Plack',
+                rpm => 'perl-Plack-Test',
+        },
         'URI::Escape' => {
                 deb => 'liburi-perl',
                 pkg => 'p5-URI',
                 rpm => 'perl-URI',
         },
+        'Test::Simple' => {
+                deb => 'perl', # perl-modules-5.XX, but the XX varies
+                pkg => 'perl5',
+                rpm => 'perl-Test-Simple',
+        },
         'highlight.pm' => {
                 deb => 'libhighlight-perl',
                 pkg => [],