CIDER Distilled: A Common Foundation for Clojure Tooling

Slide deck from my Clojure/south 2019 presentation.

Transcript

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2. M-x
   

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3. Bom dia!
   

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4. Божидар
   

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5. Bozhidar
   

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6. Bozhidar
   

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7. Bojidar
   

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9. Bug
   cool
   

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10. Sofia, Bulgaria
    Sofia, Bulgaria
    

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12. Top 10 Bulgarian
    “White” Hackers
    

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13. #NRALeaks
    

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15. Expert in cyber security
    

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16. Expert in the following
    programming languages:
    Unix, Emacs, Perl and Ruby
    

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17. The Don Juan of IT in
    Bulgaria
    

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20. First time in Brazil!
    

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21. Second time in Brazil!
    

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25. First time in São Paulo!
    

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26. First time at a conference in
    Brazil!
    

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27. Cultural Exchange
    

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38. Population of São Paulo:
    12 (22) million
    

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39. Population of Bulgaria:
    7 million
    

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40. Artur Malabarba
    

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43. @bbatsov
    

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44. metaredux.com
    

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45. emacsredux.com
    

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47. Cider?
    

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50. Clojure
    Interactive
    Development
    Environment that
    Rocks
    

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51. … for Emacs
    

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52. CIDER Distilled:
    Beyond emacs
    

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53. CIDER’s Architecture
    

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58. CIDER’s Orchard
    

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59. Orchard?
    

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61. noun
    1. a piece of enclosed land planted with fruit
    trees.
    an apple orchard
    2. (in the context of Clojure) a fertile ground for
    Clojure tooling.
    CIDER’s Orchard
    

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63. Created especially for REPL-
    powered tooling
    

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64. Extremely flexible
    

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65. Transports
    •bencode (default)
    •tty (built-in)
    •http(s) (via Drawbridge)
    •transit (via Fastlane)
    •EDN (coming in nREPL 0.7)
    

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66. Extendable
    

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67. Piggieback
    (ClojureScript Support)
    

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68. shadow-cljs
    (ClojureScript Support)
    

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69. cider-nrepl
    

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71. Common functionality for
    interactive programming
    environments
    

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72. Thin wrapper around (many)
    nREPL-agnostic libraries
    

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73. Fundamental Tooling Approaches
    •REPL-driven (runtime state inspection)
    •Static analysis based (parses and analyses the code)
    

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74. unrepl
    prepl
    nREPL
    

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75. orchard
    (swiss army knife)
    

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76. compliment
    (code completion)
    

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77. cljs-tooling
    (too hard to explain)
    

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78. thunknyc/profile
    (self-explanatory)
    

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79. fipp & puget
    (pretty printing)
    

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80. •cljfmt
    •tools.namespace
    •tools.trace
    •tools.reader
    

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81. REPL-powered tooling runs
    alongside your application code
    

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82. Mr. Anderson
    (dependency inlining)
    

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83. There’s a lot going on here!
    

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84. And we haven’t mentioned a
    single Emacs library…
    

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85. But wait, there’s more!
    

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86. sayid
    (debugging tool)
    

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87. weasel
    (ClojureScript REPL)
    

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88. refactor-nrepl
    

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92. The Lay of the Land
    

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93. Calva
    (VS Code)
    

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94. Calva -> Calvados
    

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96. Calvados is distilled from
    cider.
    

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97. Calva is distilled from CIDER.
    

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98. vim-fireplace
    

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99. vim-iced
    

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100. acid.vim
     

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101. CCW
     (Eclipse)
     

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102. Proto REPL
     (Atom)
     

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103. Non-nREPL tools
     

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104. Chlorine
     (Atom, prepl)
     

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105. Conjure
     (vim, prepl)
     

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106. vimpire
     (vim, unrepl)
     

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107. Cursive
     (IntelliJ, static analysis)
     

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108. clojure-lsp
     (cross-editor, static analysis)
     

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109. •cider-nrepl -> orchard-nrepl
     •cljs-tooling -> orchard-cljs
     

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110. Naming is hard!
     

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111. cljs-tooling
     compliment
     orchard
     

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112. Clojure’s Orchard
     

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113. Case Study:
     Improving ClojureScript code
     completion for everyone
     

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114. cljs-tooling => compliment
     

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115. clj-suitable
     

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118. Language Server Protocol
     

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120. LSP or nREPL?
     

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121. •You can run them side by side
     •You can implement LSP in terms of nREPL
     •You can proxy nREPL requests to an LSP server
     •You can implement LSP in terms of the same
     underlying libraries*
     

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123. The State of Affairs
     

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124. The Challenges
     

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125. 25%
     5%
     70%
     Yes Maybe
     I already have Notepad No
     Do you want great Clojure development tools?
     

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126. 69%
     25%
     5%
     1%
     Yes Maybe
     I already have Notepad No
     Are you willing to work on Clojure development tools?
     

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127. Few maintainers,
     many libraries
     

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128. Areas of Interest
     •sayid
     •refactor-nrepl
     

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129. ClojureScript
     

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130. Areas of Interest
     •Piggieback
     •cider-nrepl
     •orchard
     •compliment
     •weasel
     

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131. Where’s my hammock time?
     

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132. Inconsistent APIs
     

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133. Documentation
     

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134. cljdoc
     

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135. https://docs.cider.mx
     

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136. https://nrepl.org
     

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137. AsciiDoc + Antora
     

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138. Funding
     

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140. 2013-2017 (estimated)
     •$5000 in donations
     •~3000 hours of work on the projects
     

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141. Definition of Work
     •Writing code
     •Reviewing code
     •Discussing ideas
     •Educating myself so I can write/review code and discuss
     ideas
     •Supporting end users via Slack, email, etc
     •Collaborating with other tool authors
     

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142. 2018
     •$4000 (OpenCollective)
     •$5400 (Clojurists Together)
     

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143. 2019 (projected)
     •$18,000 (OpenCollective)
     •$9,000 (Clojurists Together)
     

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144. 2,250/month
     

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145. Little support from Clojure
     companies
     

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146. Development tools are a
     high leverage investment
     

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147. Clojurists Together
     

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148. opencollective.com/cider
     

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149. opencollective.com/nrepl
     

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150. GitHub Sponsors
     

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151. Future of the Orchard
     

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152. Sustainable
     

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153. Stable
     

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154. Community Driven
     

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155. Community Supported
     

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156. Open Source is not about You
     

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157. CIDER’s Orchard is
     all about YOU!!!
     

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158. Help Clojure’s Orchard…
     

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159. …to help yourselves
     

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160. Felina
     

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161. Resources
     • https://metaredux.com/posts/2018/10/29/nrepl-redux.html
     • https://metaredux.com/posts/2018/11/09/ciders-orchard-
     the-heart.html
     • https://metaredux.com/posts/2018/11/11/ciders-orchard-
     the-periphery.html
     • https://www.youtube.com/watch?v=4X-1fJm25Ww
     

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162. One more thing…
     

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163. CIDER 0.22 (Lima) is out!
     

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164. CIDER 0.22 (São Paulo)
     

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167. Credits
     twitter: @bbatsov
     github: @bbatsov
     https://metaredux.com
     https://emacsredux.com
     Clojure/south
     São Paulo,
     Brazil
     01.09.2019
     

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