remove pipenv comparison

README.md

@@ -97,72 +97,6 @@ It takes inspiration in tools that exist in other languages, like `composer` (PH
 And, finally, I started `poetry` to bring another exhaustive dependency resolver to the Python community apart from
 [Conda's](https://conda.io).
 
-### What about Pipenv?
-
-In short: I do not like the CLI it provides, or some of the decisions made,
-and I think we can make a better and more intuitive one. Here are a few things
-that I don't like.
-
-#### Dependency resolution
-
-The dependency resolution is erratic and will fail even if there is a solution. Let's take an example:
-
-```bash
-pipenv install oslo.utils==1.4.0
-```
-
-will fail with this error:
-
-```text
-Could not find a version that matches pbr!=0.7,!=2.1.0,<1.0,>=0.6,>=2.0.0
-```
-
-while Poetry will get you the right set of packages:
-
-```bash
-poetry add oslo.utils=1.4.0
-```
-
-results in :
-
-```text
-  - Installing pytz (2018.3)
-  - Installing netifaces (0.10.6)
-  - Installing netaddr (0.7.19)
-  - Installing oslo.i18n (2.1.0)
-  - Installing iso8601 (0.1.12)
-  - Installing six (1.11.0)
-  - Installing babel (2.5.3)
-  - Installing pbr (0.11.1)
-  - Installing oslo.utils (1.4.0)
-```
-
-This is possible thanks to the efficient dependency resolver at the heart of Poetry.
-
-Here is a breakdown of what exactly happens here:
-
-`oslo.utils (1.4.0)` depends on:
-
-- `pbr (>=0.6,!=0.7,<1.0)`
-- `Babel (>=1.3)`
-- `six (>=1.9.0)`
-- `iso8601 (>=0.1.9)`
-- `oslo.i18n (>=1.3.0)`
-- `netaddr (>=0.7.12)`
-- `netifaces (>=0.10.4)`
-
-What interests us is `pbr (>=0.6,!=0.7,<1.0)`.
-
-At this point, poetry will choose `pbr==0.11.1` which is the latest version that matches the constraint.
-
-Next it will try to select `oslo.i18n==3.20.0` which is the latest version that matches `oslo.i18n (>=1.3.0)`.
-
-However this version requires `pbr (!=2.1.0,>=2.0.0)` which is incompatible with `pbr==0.11.1`,
-so `poetry` will try to find a version of `oslo.i18n` that satisfies `pbr (>=0.6,!=0.7,<1.0)`.
-
-By analyzing the releases of `oslo.i18n`, it will find `oslo.i18n==2.1.0` which requires `pbr (>=0.11,<2.0)`.
-At this point the rest of the resolution is straightforward since there is no more conflict.
-
 ## Resources
 
 * [Official Website](https://python-poetry.org)