[PATCH 2/2] scripts: sphinx-pre-install: fix the need of virtenv packages

Mauro Carvalho Chehab
2021-05-25T13:28:12Z

The pip packages are only needed when the distro-provided
Sphinx version is not good enough.

Don't recommend installing it if not needed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
scripts/sphinx-pre-install | 122 ++++++++++++++++++++++---------------
1 file changed, 74 insertions(+), 48 deletions(-)

diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index b5fec149f473..288e86a9d1e5 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -22,16 +22,18 @@ my $need = 0;
my $optional = 0;
my $need_symlink = 0;
my $need_sphinx = 0;
-my $need_venv = 0;
+my $need_pip = 0;
my $need_virtualenv = 0;
+my $rec_sphinx_upgrade = 0;
my $install = "";
my $virtenv_dir = "";
my $python_cmd = "";
+my $activate_cmd;
my $min_version;
my $cur_version;
my $rec_version = "1.7.9"; # PDF won't build here
my $min_pdf_version = "2.4.4"; # Min version where pdf builds
-
+my $latest_avail_ver;

#
# Command line arguments
@@ -700,11 +702,12 @@ sub deactivate_help()

sub get_virtenv()
{
+ my $ver;
my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate";
my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate";

@activates = sort {$b cmp $a} @activates;
- my ($activate, $ver);
+
foreach my $f (@activates) {
next if ($f lt $min_activate);

@@ -722,6 +725,42 @@ sub get_virtenv()
return ("", "");
}

+sub recommend_sphinx_upgrade()
+{
+ my $venv_ver;
+
+ # Avoid running sphinx-builds from venv if $cur_version is good
+ if ($cur_version && ($cur_version ge $rec_version)) {
+ $latest_avail_ver = $cur_version;
+ return;
+ }
+
+ # Get the highest version from sphinx_*/bin/sphinx-build and the
+ # corresponding command to activate the venv/virtenv
+ $activate_cmd = get_virtenv();
+
+ # Store the highest version from Sphinx existing virtualenvs
+ if (($activate_cmd ne "") && ($venv_ver gt $cur_version)) {
+ $latest_avail_ver = $venv_ver;
+ } else {
+ $latest_avail_ver = $cur_version if ($cur_version);
+ }
+
+ # As we don't know package version of Sphinx, and there's no
+ # virtual environments, don't check if upgrades are needed
+ if (!$virtualenv) {
+ return if (!$latest_avail_ver);
+ }
+
+ # Either there are already a virtual env or a new one should be created
+ $need_pip = 1;
+
+ # Return if the reason is due to an upgrade or not
+ if ($latest_avail_ver lt $rec_version) {
+ $rec_sphinx_upgrade = 1;
+ }
+}
+
#
# The logic here is complex, as it have to deal with different versions:
# - minimal supported version;
@@ -732,30 +771,21 @@ sub recommend_sphinx_version($)
{
my $virtualenv_cmd = shift;

- # Avoid running sphinx-builds from venv if $cur_version is good
+ if ($latest_avail_ver lt $min_pdf_version) {
+ print "note: If you want pdf, you need at least Sphinx $min_pdf_version.\n";
+ }
+
+ # Version is OK. Nothing to do.
return if ($cur_version && ($cur_version ge $rec_version));

- my $latest_avail_ver;
- my $rec_sphinx_upgrade = 0;
-
- # Get the highest version from sphinx_*/bin/sphinx-build and the
- # corresponding command to activate the venv/virtenv
- my ($activate, $venv_ver) = get_virtenv();
-
- if (($activate ne "") && ($venv_ver gt $cur_version)) {
- $latest_avail_ver = $venv_ver;
- } else {
- $latest_avail_ver = $cur_version if ($cur_version);
- }
-
if (!$need_sphinx) {
# sphinx-build is present and its version is >= $min_version

#only recommend enabling a newer virtenv version if makes sense.
if ($latest_avail_ver gt $cur_version) {
- printf "\nYou may also use the newer Sphinx version $venv_ver with:\n";
+ printf "\nYou may also use the newer Sphinx version $latest_avail_ver with:\n";
printf "\tdeactivate\n" if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
- printf "\t. $activate\n";
+ printf "\t. $activate_cmd\n";
deactivate_help();

return;
@@ -773,9 +803,9 @@ sub recommend_sphinx_version($)
# installed one via virtenv with a newer version.
# So, print commands to enable it
if ($latest_avail_ver gt $cur_version) {
- printf "\nYou may also use the Sphinx virtualenv version $venv_ver with:\n";
+ printf "\nYou may also use the Sphinx virtualenv version $latest_avail_ver with:\n";
printf "\tdeactivate\n" if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
- printf "\t. $activate\n";
+ printf "\t. $activate_cmd\n";
deactivate_help();

return;
@@ -789,8 +819,8 @@ sub recommend_sphinx_version($)
if ($latest_avail_ver && $cur_version ge $min_version) {
# If there's a good enough version, ask the user to enable it
if ($latest_avail_ver ge $rec_version) {
- printf "\nNeed to activate Sphinx (version $venv_ver) on virtualenv with:\n";
- printf "\t. $activate\n";
+ printf "\nNeed to activate Sphinx (version $latest_avail_ver) on virtualenv with:\n";
+ printf "\t. $activate_cmd\n";
deactivate_help();

return;
@@ -801,10 +831,6 @@ sub recommend_sphinx_version($)

if ($latest_avail_ver lt $rec_version) {
print "Warning: It is recommended at least Sphinx version $rec_version.\n";
- $rec_sphinx_upgrade = 1;
- }
- if ($latest_avail_ver lt $min_pdf_version) {
- print "note: If you want pdf, you need at least $min_pdf_version.\n";
}
}

@@ -823,11 +849,8 @@ sub recommend_sphinx_version($)

$python_cmd = find_python_no_venv();

- if ($need_venv) {
- printf "\t$python_cmd -m venv $virtenv_dir\n";
- } else {
- printf "\t$virtualenv_cmd $virtenv_dir\n";
- }
+ printf "\t$virtualenv_cmd $virtenv_dir\n";
+
printf "\t. $virtenv_dir/bin/activate\n";
printf "\tpip install -r $requirement_file\n";
deactivate_help();
@@ -854,15 +877,14 @@ sub check_needs()
if ($virtualenv) {
my $tmp = qx($python_cmd --version 2>&1);
if ($tmp =~ m/(\d+\.)(\d+\.)/) {
- if ($1 >= 3 && $2 >= 3) {
- $need_venv = 1; # python 3.3 or upper
- } else {
- $need_virtualenv = 1;
- }
if ($1 < 3) {
# Fail if it finds python2 (or worse)
die "Python 3 is required to build the kernel docs\n";
}
+ if ($1 == 3 && $2 < 3) {
+ # Need Python 3.3 or upper for venv
+ $need_virtualenv = 1;
+ }
} else {
die "Warning: couldn't identify $python_cmd version!";
}
@@ -871,14 +893,22 @@ sub check_needs()
}
}

- # Set virtualenv command line, if python < 3.3
+ recommend_sphinx_upgrade();
+
my $virtualenv_cmd;
- if ($need_virtualenv) {
- $virtualenv_cmd = findprog("virtualenv-3");
- $virtualenv_cmd = findprog("virtualenv-3.5") if (!$virtualenv_cmd);
- if (!$virtualenv_cmd) {
- check_program("virtualenv", 0);
- $virtualenv_cmd = "virtualenv";
+
+ if ($need_pip) {
+ # Set virtualenv command line, if python < 3.3
+ if ($need_virtualenv) {
+ $virtualenv_cmd = findprog("virtualenv-3");
+ $virtualenv_cmd = findprog("virtualenv-3.5") if (!$virtualenv_cmd);
+ if (!$virtualenv_cmd) {
+ check_program("virtualenv", 0);
+ $virtualenv_cmd = "virtualenv";
+ }
+ } else {
+ $virtualenv_cmd = "$python_cmd -m venv";
+ check_python_module("ensurepip", 0);
}
}

@@ -895,10 +925,6 @@ sub check_needs()
check_program("rsvg-convert", 2) if ($pdf);
check_program("latexmk", 2) if ($pdf);

- if ($need_venv) {
- check_python_module("ensurepip", 0);
- }
-
# Do distro-specific checks and output distro-install commands
check_distros();

--
2.31.1