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  • Re: [gentoo-dev] [PATCH] python-utils-r1.eclass: epytest, use NO_COLOR

    From =?UTF-8?Q?Micha=C5=82_G=C3=B3rny?=@21:1/5 to Eli Schwartz on Mon Dec 11 20:30:02 2023
    On Mon, 2023-12-11 at 13:57 -0500, Eli Schwartz wrote:
    On 12/2/23 7:44 AM, Michał Górny wrote:
    Update epytest to respect the modern NO_COLOR variable rather than Portage's old NOCOLOR. Adjust it to correctly check whether it is set
    at all rather than to a specific value, to match the behavior of pytest itself.

    Signed-off-by: Michał Górny <[email protected]>
    ---
    eclass/python-utils-r1.eclass | 11 ++---------
    1 file changed, 2 insertions(+), 9 deletions(-)

    diff --git a/eclass/python-utils-r1.eclass b/eclass/python-utils-r1.eclass index 394f64a5d139..da9cb820840f 100644
    --- a/eclass/python-utils-r1.eclass
    +++ b/eclass/python-utils-r1.eclass
    @@ -1336,15 +1336,8 @@ epytest() {
    _python_check_EPYTHON
    _python_check_occluded_packages

    - local color
    - case ${NOCOLOR} in
    - true|yes)
    - color=no
    - ;;
    - *)
    - color=yes
    - ;;
    - esac
    + local color=yes
    + [[ ${NO_COLOR} ]] && color=no


    [[ -v NO_COLOR ]]

    This is processed by the pytest code:

    ```
    if "NO_COLOR" in os.environ:
    return False
    ```


    That looks wrong. Per [1]:

    […] NO_COLOR environment variable that, when present and not an empty
    string (regardless of its value), prevents the addition of ANSI color.

    So hey, I'm actually fixing pytest ;-).

    [1] https://no-color.org/

    --
    Best regards,
    Michał Górny


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  • From Ulrich Mueller@21:1/5 to All on Mon Dec 11 20:40:01 2023
    On Mon, 11 Dec 2023, Eli Schwartz wrote:

    + local color=yes
    + [[ ${NO_COLOR} ]] && color=no

    [[ -v NO_COLOR ]]

    No, this would give the wrong result if NO_COLOR is set to an empty
    value. [[ ${NO_COLOR} ]] or [[ -n ${NO_COLOR} ]] is the correct test:

    "Command-line software which adds ANSI color to its output by default
    should check for a NO_COLOR environment variable that, when present
    and not an empty string (regardless of its value), prevents the
    addition of ANSI color." -- https://no-color.org/

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  • From Ulrich Mueller@21:1/5 to All on Mon Dec 11 21:40:01 2023
    On Mon, 11 Dec 2023, Eli Schwartz wrote:

    "Command-line software which adds ANSI color to its output by default
    should check for a NO_COLOR environment variable that, when present
    and not an empty string (regardless of its value), prevents the
    addition of ANSI color." -- https://no-color.org/

    Again, not according to pytest itself. ;)

    Given the commit message says:

    """
    Adjust it to correctly check whether it is set at all rather than to a specific value, to match the behavior of pytest itself.
    """

    The standard is defined by sno-color.org. If pytest does something
    different then it is a bug.

    Ulrich

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  • From =?UTF-8?Q?Toralf_F=C3=B6rster?=@21:1/5 to All on Mon Dec 11 22:20:02 2023
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