Generate ChangeLog

ChangeLog

+# ChangeLog
+
+## [0.0.8](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2020-01-09)
+
+Release 0.0.8
+
+Distro support:
+* add some FreeBSD support
+* add linux mint support
+* add some redhat support
+* add some alpine support
+
+New tool versions:
+* GHC: 8.4.1, 8.4.2, 8.6.4, 8.6.5, 8.8.1
+* cabal: 3.0.0.0
+
+Commands and API:
+* new 'changelog' subcommand added
+* 'uprade' subcommand is tweaked':
+  - add --inplace flag
+  - by default install into BIN_LOCATION
+* new subcommand 'print-system-reqs'
+* 'compile' subcommand is now hidden from help menu (since it's only for power-users, use 'ghcup -v --help' to show all commands)
+* 'list' subcommand is overhauled and 'show' removed
+* allow to overwrite the distro detection system (see 'ghcup -v --help')
+* allow to overwrite meta download and meta version files via GHCUP_META_DOWNLOAD_URL and GHCUP_META_VERSION_URL
+
+Fixes:
+* clean up interrupted download cache properly
+* send debug output to stderr only
+* fix bug in bootstrap-haskell causing odd errors
+
+Other:
+* introduce major version symlinks (e.g. 8.6 -> 8.6.5) and add x.y tags
+* use GHCUP_INSTALL_BASE_PREFIX in bootstrap-haskell
+* don't reinstall cabal-install from source in bootstrap-haskell
+* various usability improvements in bootstrap-haskell
+* add bash-completion script
+* add manpage support when using man-db
+
+
+## [0.0.7](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2019-01-07)
+
+Release 0.0.7
+
+This release introduces a new way of installing ghcup (and GHC and cabal in the process)
+with the infamous `curl .. | sh` pattern. See #36 for discussion. This
+is completely optional.
+
+Features:
+
+- Add a bootstrap-haskell script, fixes #36
+- Allow to specify tags for `ghcup install`, `ghcup install-cabal` and `ghcup set`
+- `ghcup list` also shows tags
+- support installing on macOS aka Darwin
+- Improve detection logic for CentOS/Alpine/AIX/FreeBSD
+- Introduce a GHCUP_INSTALL_BASE_PREFIX env variable to control where `.ghcup` directory will be created
+- Add rudimentary support for Amazon Linux
+
+Bugfixes:
+
+- Create missing haddock -> haddock-ghc symlink
+- Emit distro-alias inferred in `debug-info` output
+- Tweak exit code for `ghcup install` (If a GHC is already installed, we shouldn't treat it as an error)
+
+Cleanups:
+
+- Simplify mkdir calls
+- Documentation improvements
+- Error handling improvements
+
+API changes:
+
+- `self-update` was renamed to `upgrade`
+
+
+## [0.0.6](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2018-10-30)
+
+Release 0.0.6
+
+
+## [0.0.5](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2018-10-16)
+
+Release 0.0.5
+
+
+## [0.0.4](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2018-10-09)
+
+Release 0.0.4
+
+
+## [0.0.3](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2018-09-30)
+
+Release 0.0.3
+
+
+## [0.0.2](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2018-09-30)
+
+Release 0.0.2
+
+
+## [0.0.1](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (2018-09-29)
+
+Release 0.0.1
+
+

generate_changelog.sh

+#!/bin/sh
+
+printf "# ChangeLog\n\n"
+
+for current_tag in $(git tag --sort=-creatordate) ; do
+    tag_date=$(git log -1 --pretty=format:'%ad' --date=short ${current_tag})
+	printf "## [${current_tag}](https://gitlab.haskell.org/haskell/ghcup/-/tags/0.0.8) (${tag_date})\n\n"
+	git --no-pager tag -l --format='%(contents)' ${current_tag} | sed -e '/BEGIN PGP/,$d'
+    printf "\n\n"
+done
+