+Makefile

+init script
+packaging hints
~adjust Travis script to prepare for the tests

.travis.yml

@@ -4,5 +4,8 @@ before_install:
     - sudo apt-get update
     - sudo apt-get -y install fish
 script:
-    - bin/install
-    - fish -c "fisher i fishery/fishtape; fishtape test/*.fish"
+    - sudo make install
+    - mkdir -p ~/.config/fish
+    - echo "source /usr/share/fish/config-fisherman.fish" >> ~/.config/fish/config.fish
+    - fish -c "fisher i fishtape"
+    - fish -c "fishtape test/*.fish"

Makefile

@@ -0,0 +1,25 @@
+sharepath = $(DESTDIR)/usr/share
+fishpath = $(sharepath)/fish
+fisherpath = $(sharepath)/fisherman
+manpath = $(sharepath)/man
+
+.PHONY: all
+all:
+
+.PHONY: install
+install:
+	# prepare directories because install -Dt won't do it on the CI server
+	mkdir -p "$(fisherpath)/completions" "$(fisherpath)/functions"
+	# the main config, which can be sourced by the user
+	install -Dm 644 config-fisherman.fish "$(fishpath)/config-fisherman.fish"
+	install -Dm 644 config.fish "$(fisherpath)/config.fish"
+	install -Dm 644 config-fisherman.fish "$(fishpath)/config-fisherman.fish"
+	# completions
+	install -Dt "$(fisherpath)/completions" completions/*
+	# functions
+	install -Dt "$(fisherpath)/functions" functions/*
+	# man pages, README and LICENSE
+	install -Dt "$(manpath)/man1" man/man1/*
+
+.PHONY: clean
+clean:

README.md

@@ -27,6 +27,19 @@
 curl -sL get.fisherman.sh | fish
 ```
 
+## Packaging
+
+Fisherman supports the [DESTDIR convention](https://www.gnu.org/prep/standards/html_node/DESTDIR.html). Using the Makefile (`DESTDIR` should be adjusted with respect to your OS/distribution or simply not provided):
+```bash
+make install DESTDIR=/path/to/stage
+```
+
+### Usage prerequisites
+
+In order for users who install the package to actually use Fisherman, they need to source the provided `/usr/share/fish/config-fisherman.git`. In your package, you should thus provide a hint such as the following:
+
+Please run `echo "source /usr/share/fish/config-fisherman.git" >> ~/.config/fish/config.fish` to enable Fisherman for your current user.
+
 ## Usage
 
 Install plugins.

config-fisherman.fish

@@ -0,0 +1,21 @@
+# If fisher_home is not provided, use the global directory:
+set -q fisher_home; or set -g fisher_home (dirname (status -f))/../fisherman
+
+# If fisher_config is not provided, set it up:
+set -q fisher_config
+or if test ! -z "$XDG_CONFIG_HOME"
+    set -g fisher_config $XDG_CONFIG_HOME/fisherman
+else
+    # if XDG home is unset or empty, use ~/.config as a fallback
+    set -g fisher_config ~/.config/fisherman
+end
+
+# To not break fish, we need to make sure the config dir exists:
+if test ! -d "$fisher_config"
+    echo "Setting up Fisherman config dir..."
+    mkdir -p "$fisher_config/cache"
+    touch "$fisher_config/fishfile"
+    echo "Done."
+end
+
+source "$fisher_home/config.fish"